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URL: https://nvd.nist.gov/vuln/detail/cve-2021-3156

⇱ NVD - cve-2021-3156

  1. Vulnerabilities

CVE-2021-3156 Detail

Description

Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://seclists.org/fulldisclosure/2021/Feb/42 CVE, MITRE Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2021/Jan/79 CVE, MITRE Exploit  Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2024/Feb/3 CVE, MITRE Exploit  Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/01/26/3 CVE, MITRE Exploit  Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/01/27/1 CVE, MITRE Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/01/27/2 CVE, MITRE Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/02/15/1 CVE, MITRE Exploit  Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/09/14/2 CVE, MITRE Mailing List  Patch  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2024/01/30/6 CVE, MITRE Exploit  Mailing List 
http://www.openwall.com/lists/oss-security/2024/01/30/8 CVE, MITRE Mailing List 
https://kc.mcafee.com/corporate/index?page=content&id=SB10348 CVE, MITRE Broken Link  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html CVE, MITRE Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ CVE, MITRE Mailing List  Release Notes 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ CVE, MITRE Mailing List  Release Notes 
https://security.gentoo.org/glsa/202101-33 CVE, MITRE Third Party Advisory 
https://security.netapp.com/advisory/ntap-20210128-0001/ CVE, MITRE Third Party Advisory 
https://security.netapp.com/advisory/ntap-20210128-0002/ CVE, MITRE Third Party Advisory 
https://support.apple.com/kb/HT212177 CVE, MITRE Third Party Advisory 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM CVE, MITRE Third Party Advisory 
https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability CVE, MITRE Third Party Advisory 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3156 CISA-ADP US Government Resource 
https://www.debian.org/security/2021/dsa-4839 CVE, MITRE Third Party Advisory 
https://www.kb.cert.org/vuls/id/794544 CVE, MITRE Third Party Advisory  US Government Resource 
https://www.openwall.com/lists/oss-security/2021/01/26/3 CVE, MITRE Exploit  Mailing List  Third Party Advisory 
https://www.oracle.com//security-alerts/cpujul2021.html CVE, MITRE Patch  Third Party Advisory 
https://www.oracle.com/security-alerts/cpuapr2022.html CVE, MITRE Patch  Third Party Advisory 
https://www.oracle.com/security-alerts/cpuoct2021.html CVE, MITRE Patch  Third Party Advisory 
https://www.sudo.ws/stable.html#1.9.5p2 CVE, MITRE Release Notes 
https://www.synology.com/security/advisory/Synology_SA_21_02 CVE, MITRE Third Party Advisory 
https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156 MITRE Exploit  Third Party Advisory 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
Sudo Heap-Based Buffer Overflow Vulnerability 04/06/2022 04/27/2022 Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-193 Off-by-one Error 👁 cwe source acceptance level
NIST   CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

52 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 12:04:45 AM

Action Type Old Value New Value
Added SSVC 
{"timestamp":"2025-02-03T15:43:52.658146Z","id":"CVE-2021-3156","options":[{"exploitation":"active"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by MITRE 6/17/2026 12:04:45 AM

Action Type Old Value New Value
Added Affected 
[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]

Modified Analysis by NIST 11/10/2025 9:41:45 AM

Action Type Old Value New Value
Added Reference Type 
CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3156 Types: US Government Resource

CVE Modified by CISA-ADP 10/21/2025 8:17:43 PM

Action Type Old Value New Value
Added Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3156

CVE Modified by CISA-ADP 10/21/2025 4:18:45 PM

Action Type Old Value New Value
Removed Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3156

CVE Modified by CISA-ADP 10/21/2025 3:19:20 PM

Action Type Old Value New Value
Added Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3156

Modified Analysis by NIST 4/03/2025 3:47:48 PM

Action Type Old Value New Value

CVE Modified by CISA-ADP 2/03/2025 12:15:12 PM

Action Type Old Value New Value
Added CVSS V3.1 
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added CWE 
CWE-193

CPE Deprecation Remap by NIST 1/14/2025 2:29:55 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:a:synology:diskstation_manager:6.2:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:o:synology:diskstation_manager:6.2:*:*:*:*:*:*:*

CVE Modified by CVE 11/21/2024 1:21:01 AM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html
Added Reference 
http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html
Added Reference 
http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html
Added Reference 
http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html
Added Reference 
http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
Added Reference 
http://seclists.org/fulldisclosure/2021/Feb/42
Added Reference 
http://seclists.org/fulldisclosure/2021/Jan/79
Added Reference 
http://seclists.org/fulldisclosure/2024/Feb/3
Added Reference 
http://www.openwall.com/lists/oss-security/2021/01/26/3
Added Reference 
http://www.openwall.com/lists/oss-security/2021/01/27/1
Added Reference 
http://www.openwall.com/lists/oss-security/2021/01/27/2
Added Reference 
http://www.openwall.com/lists/oss-security/2021/02/15/1
Added Reference 
http://www.openwall.com/lists/oss-security/2021/09/14/2
Added Reference 
http://www.openwall.com/lists/oss-security/2024/01/30/6
Added Reference 
http://www.openwall.com/lists/oss-security/2024/01/30/8
Added Reference 
https://kc.mcafee.com/corporate/index?page=content&id=SB10348
Added Reference 
https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html
Added Reference 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/
Added Reference 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/
Added Reference 
https://security.gentoo.org/glsa/202101-33
Added Reference 
https://security.netapp.com/advisory/ntap-20210128-0001/
Added Reference 
https://security.netapp.com/advisory/ntap-20210128-0002/
Added Reference 
https://support.apple.com/kb/HT212177
Added Reference 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM
Added Reference 
https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability
Added Reference 
https://www.debian.org/security/2021/dsa-4839
Added Reference 
https://www.kb.cert.org/vuls/id/794544
Added Reference 
https://www.openwall.com/lists/oss-security/2021/01/26/3
Added Reference 
https://www.oracle.com//security-alerts/cpujul2021.html
Added Reference 
https://www.oracle.com/security-alerts/cpuapr2022.html
Added Reference 
https://www.oracle.com/security-alerts/cpuoct2021.html
Added Reference 
https://www.sudo.ws/stable.html#1.9.5p2
Added Reference 
https://www.synology.com/security/advisory/Synology_SA_21_02

Modified Analysis by NIST 9/19/2024 3:58:23 PM

Action Type Old Value New Value
Changed Reference Type 
https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156 No Types Assigned


 
https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156 Exploit, Third Party Advisory

CVE Modified by MITRE 9/18/2024 1:15:13 PM

Action Type Old Value New Value
Added Reference 
MITRE https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156 [No types assigned]

Modified Analysis by NIST 7/09/2024 2:27:54 PM

Action Type Old Value New Value
Changed CPE Configuration 
AND
 OR
 cpe:2.3:h:oracle:micros_compact_workstation_3:-:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:oracle:micros_compact_workstation_3_firmware:310:*:*:*:*:*:*:*


 
AND
 OR
 *cpe:2.3:o:oracle:micros_compact_workstation_3_firmware:310:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:oracle:micros_compact_workstation_3:-:*:*:*:*:*:*:*
Changed CPE Configuration 
AND
 OR
 cpe:2.3:h:oracle:micros_es400:-:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:oracle:micros_es400_firmware:*:*:*:*:*:*:*:* versions from (including) 400 up to (including) 410


 
AND
 OR
 *cpe:2.3:o:oracle:micros_es400_firmware:*:*:*:*:*:*:*:* versions from (including) 400 up to (including) 410
 OR
 cpe:2.3:h:oracle:micros_es400:-:*:*:*:*:*:*:*
Changed CPE Configuration 
AND
 OR
 cpe:2.3:h:oracle:micros_kitchen_display_system:-:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:oracle:micros_kitchen_display_system_firmware:210:*:*:*:*:*:*:*


 
AND
 OR
 *cpe:2.3:o:oracle:micros_kitchen_display_system_firmware:210:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:oracle:micros_kitchen_display_system:-:*:*:*:*:*:*:*
Changed CPE Configuration 
AND
 OR
 cpe:2.3:h:oracle:micros_workstation_5a:-:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:oracle:micros_workstation_5a_firmware:5a:*:*:*:*:*:*:*


 
AND
 OR
 *cpe:2.3:o:oracle:micros_workstation_5a_firmware:5a:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:oracle:micros_workstation_5a:-:*:*:*:*:*:*:*
Changed CPE Configuration 
AND
 OR
 cpe:2.3:h:synology:skynas:-:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:synology:skynas_firmware:-:*:*:*:*:*:*:*


 
AND
 OR
 *cpe:2.3:o:synology:skynas_firmware:-:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:synology:skynas:-:*:*:*:*:*:*:*
Changed CPE Configuration 
AND
 OR
 cpe:2.3:h:synology:vs960hd:-:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:synology:vs960hd_firmware:-:*:*:*:*:*:*:*


 
AND
 OR
 *cpe:2.3:o:synology:vs960hd_firmware:-:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:synology:vs960hd:-:*:*:*:*:*:*:*
Changed CPE Configuration 
OR
 *cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:oncommand_unified_manager_core_package:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
 *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:oncommand_unified_manager_core_package:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:ontap_tools:9:*:*:*:*:vmware_vsphere:*:*
 *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
Changed Reference Type 
http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html Third Party Advisory, VDB Entry


 
http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry
Changed Reference Type 
http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html No Types Assigned


 
http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry
Changed Reference Type 
http://seclists.org/fulldisclosure/2024/Feb/3 No Types Assigned


 
http://seclists.org/fulldisclosure/2024/Feb/3 Exploit, Mailing List, Third Party Advisory
Changed Reference Type 
http://www.openwall.com/lists/oss-security/2024/01/30/6 No Types Assigned


 
http://www.openwall.com/lists/oss-security/2024/01/30/6 Exploit, Mailing List
Changed Reference Type 
http://www.openwall.com/lists/oss-security/2024/01/30/8 No Types Assigned


 
http://www.openwall.com/lists/oss-security/2024/01/30/8 Mailing List
Changed Reference Type 
https://kc.mcafee.com/corporate/index?page=content&id=SB10348 Third Party Advisory


 
https://kc.mcafee.com/corporate/index?page=content&id=SB10348 Broken Link, Third Party Advisory
Changed Reference Type 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ No Types Assigned


 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ Mailing List, Release Notes
Changed Reference Type 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ No Types Assigned


 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ Mailing List, Release Notes
Changed Reference Type 
https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability Patch, Third Party Advisory


 
https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability Third Party Advisory
Changed Reference Type 
https://www.sudo.ws/stable.html#1.9.5p2 Release Notes, Vendor Advisory


 
https://www.sudo.ws/stable.html#1.9.5p2 Release Notes

CVE Modified by MITRE 5/14/2024 5:24:03 AM

Action Type Old Value New Value

CVE Modified by MITRE 2/04/2024 4:15:08 AM

Action Type Old Value New Value
Added Reference 
MITRE http://seclists.org/fulldisclosure/2024/Feb/3 [No types assigned]

CVE Modified by MITRE 1/31/2024 1:15:45 PM

Action Type Old Value New Value
Added Reference 
MITRE http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html [No types assigned]

CVE Modified by MITRE 1/30/2024 4:15:08 PM

Action Type Old Value New Value
Added Reference 
MITRE http://www.openwall.com/lists/oss-security/2024/01/30/6 [No types assigned]
Added Reference 
MITRE http://www.openwall.com/lists/oss-security/2024/01/30/8 [No types assigned]

CVE Modified by MITRE 11/06/2023 10:37:56 PM

Action Type Old Value New Value
Added Reference 
MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ [No types assigned]
Added Reference 
MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ [No types assigned]
Removed Reference 
MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/
Removed Reference 
MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/

Modified Analysis by NIST 9/02/2022 11:40:36 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:a:oracle:tekelec_platform_distribution:*:*:*:*:*:*:*:* versions from (including) 7.4.0 up to (including) 7.7.1


 
OR
 *cpe:2.3:a:oracle:communications_performance_intelligence_center:*:*:*:*:*:*:*:* versions from (including) 10.3.0.0.0 up to (including) 10.3.0.2.1
 *cpe:2.3:a:oracle:communications_performance_intelligence_center:*:*:*:*:*:*:*:* versions from (including) 10.4.0.1.0 up to (including) 10.4.0.3.1
 *cpe:2.3:a:oracle:tekelec_platform_distribution:*:*:*:*:*:*:*:* versions from (including) 7.4.0 up to (including) 7.7.1
Changed Reference Type 
https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned


 
https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory

CVE Modified by MITRE 4/19/2022 8:16:13 PM

Action Type Old Value New Value
Added Reference 
https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned]

Modified Analysis by NIST 4/04/2022 8:59:39 AM

Action Type Old Value New Value
Added CPE Configuration 
OR
 *cpe:2.3:a:oracle:tekelec_platform_distribution:*:*:*:*:*:*:*:* versions from (including) 7.4.0 up to (including) 7.7.1
Changed Reference Type 
https://www.oracle.com/security-alerts/cpuoct2021.html No Types Assigned


 
https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory

CVE Modified by MITRE 10/20/2021 7:17:29 AM

Action Type Old Value New Value
Added Reference 
https://www.oracle.com/security-alerts/cpuoct2021.html [No Types Assigned]

Reanalysis by NIST 9/27/2021 1:12:49 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:* versions up to (excluding) 1.9.5
 *cpe:2.3:a:sudo_project:sudo:1.9.5:patch1:*:*:*:*:*:*


 
OR
 *cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:* versions from (including) 1.8.2 up to (excluding) 1.8.32
 *cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:* versions from (including) 1.9.0 up to (excluding) 1.9.5
 *cpe:2.3:a:sudo_project:sudo:1.9.5:-:*:*:*:*:*:*
 *cpe:2.3:a:sudo_project:sudo:1.9.5:patch1:*:*:*:*:*:*

Modified Analysis by NIST 9/16/2021 9:19:41 AM

Action Type Old Value New Value
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:oracle:micros_compact_workstation_3_firmware:310:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:oracle:micros_compact_workstation_3:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:oracle:micros_es400_firmware:*:*:*:*:*:*:*:* versions from (including) 400 up to (including) 410
 OR
 cpe:2.3:h:oracle:micros_es400:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:oracle:micros_kitchen_display_system_firmware:210:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:oracle:micros_kitchen_display_system:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:oracle:micros_workstation_5a_firmware:5a:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:oracle:micros_workstation_5a:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:oracle:micros_workstation_6_firmware:*:*:*:*:*:*:*:* versions from (including) 610 up to (including) 655
 OR
 cpe:2.3:h:oracle:micros_workstation_6:-:*:*:*:*:*:*:*
Changed Reference Type 
http://www.openwall.com/lists/oss-security/2021/09/14/2 No Types Assigned


 
http://www.openwall.com/lists/oss-security/2021/09/14/2 Mailing List, Patch, Third Party Advisory
Changed Reference Type 
https://www.oracle.com//security-alerts/cpujul2021.html No Types Assigned


 
https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory

CVE Modified by MITRE 9/14/2021 8:15:07 PM

Action Type Old Value New Value
Added Reference 
http://www.openwall.com/lists/oss-security/2021/09/14/2 [No Types Assigned]

CVE Modified by MITRE 7/20/2021 7:15:37 PM

Action Type Old Value New Value
Added Reference 
https://www.oracle.com//security-alerts/cpujul2021.html [No Types Assigned]

Modified Analysis by NIST 3/26/2021 4:02:19 PM

Action Type Old Value New Value
Added CWE 
NIST CWE-193
Removed CWE 
NIST CWE-787

CVE Modified by MITRE 3/16/2021 10:15:13 AM

Action Type Old Value New Value
Changed Description 
Sudo before 1.9.5p2 has a Heap-based Buffer Overflow, allowing privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.


 
Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.

Modified Analysis by NIST 3/08/2021 8:37:41 AM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
 *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:synology:skynas_firmware:-:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:synology:skynas:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:synology:vs960hd_firmware:-:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:synology:vs960hd:-:*:*:*:*:*:*:*
Added CPE Configuration 
OR
 *cpe:2.3:a:beyondtrust:privilege_management_for_mac:*:*:*:*:*:*:*:* versions up to (excluding) 21.1.1
 *cpe:2.3:a:beyondtrust:privilege_management_for_unix\/linux:*:*:*:*:basic:*:*:* versions up to (excluding) 10.3.2-10
Added CPE Configuration 
OR
 *cpe:2.3:a:synology:diskstation_manager:6.2:*:*:*:*:*:*:*
 *cpe:2.3:a:synology:diskstation_manager_unified_controller:3.0:*:*:*:*:*:*:*
Changed Reference Type 
http://seclists.org/fulldisclosure/2021/Jan/79 No Types Assigned


 
http://seclists.org/fulldisclosure/2021/Jan/79 Exploit, Mailing List, Third Party Advisory
Changed Reference Type 
https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html No Types Assigned


 
https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html Mailing List, Third Party Advisory
Changed Reference Type 
https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability No Types Assigned


 
https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability Patch, Third Party Advisory
Changed Reference Type 
https://www.synology.com/security/advisory/Synology_SA_21_02 No Types Assigned


 
https://www.synology.com/security/advisory/Synology_SA_21_02 Third Party Advisory

CVE Modified by MITRE 2/23/2021 1:15:14 PM

Action Type Old Value New Value
Added Reference 
https://www.synology.com/security/advisory/Synology_SA_21_02 [No Types Assigned]

CVE Modified by MITRE 2/19/2021 2:15:12 PM

Action Type Old Value New Value
Added Reference 
http://seclists.org/fulldisclosure/2021/Jan/79 [No Types Assigned]
Added Reference 
https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html [No Types Assigned]
Added Reference 
https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability [No Types Assigned]

Modified Analysis by NIST 2/18/2021 12:19:33 PM

Action Type Old Value New Value
Added CPE Configuration 
OR
 *cpe:2.3:a:mcafee:web_gateway:8.2.17:*:*:*:*:*:*:*
 *cpe:2.3:a:mcafee:web_gateway:9.2.8:*:*:*:*:*:*:*
 *cpe:2.3:a:mcafee:web_gateway:10.0.4:*:*:*:*:*:*:*
Changed Reference Type 
http://seclists.org/fulldisclosure/2021/Feb/42 No Types Assigned


 
http://seclists.org/fulldisclosure/2021/Feb/42 Mailing List, Third Party Advisory
Changed Reference Type 
http://www.openwall.com/lists/oss-security/2021/02/15/1 No Types Assigned


 
http://www.openwall.com/lists/oss-security/2021/02/15/1 Exploit, Mailing List, Third Party Advisory
Changed Reference Type 
https://kc.mcafee.com/corporate/index?page=content&id=SB10348 No Types Assigned


 
https://kc.mcafee.com/corporate/index?page=content&id=SB10348 Third Party Advisory
Changed Reference Type 
https://lists.fedoraproject.org/archives/list/[email protected]/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ Third Party Advisory


 
https://lists.fedoraproject.org/archives/list/[email protected]/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ Mailing List, Third Party Advisory
Changed Reference Type 
https://lists.fedoraproject.org/archives/list/[email protected]/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ Third Party Advisory


 
https://lists.fedoraproject.org/archives/list/[email protected]/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ Mailing List, Third Party Advisory

CVE Modified by MITRE 2/15/2021 8:15:13 AM

Action Type Old Value New Value
Added Reference 
http://www.openwall.com/lists/oss-security/2021/02/15/1 [No Types Assigned]

CVE Modified by MITRE 2/13/2021 4:15:14 AM

Action Type Old Value New Value
Added Reference 
https://kc.mcafee.com/corporate/index?page=content&id=SB10348 [No Types Assigned]

CVE Modified by MITRE 2/11/2021 10:15:13 PM

Action Type Old Value New Value
Added Reference 
http://seclists.org/fulldisclosure/2021/Feb/42 [No Types Assigned]

Modified Analysis by NIST 2/11/2021 10:03:35 AM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:a:netapp:oncommand_unified_manager_core_package:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
 *cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:oncommand_unified_manager_core_package:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
Changed Reference Type 
http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html No Types Assigned


 
http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry
Changed Reference Type 
https://support.apple.com/kb/HT212177 No Types Assigned


 
https://support.apple.com/kb/HT212177 Third Party Advisory
Changed Reference Type 
https://www.kb.cert.org/vuls/id/794544 No Types Assigned


 
https://www.kb.cert.org/vuls/id/794544 Third Party Advisory, US Government Resource

CVE Modified by MITRE 2/09/2021 3:15:15 PM

Action Type Old Value New Value
Added Reference 
https://support.apple.com/kb/HT212177 [No Types Assigned]

CVE Modified by MITRE 2/05/2021 1:15:12 PM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html [No Types Assigned]

CVE Modified by MITRE 2/05/2021 9:15:19 AM

Action Type Old Value New Value
Added Reference 
https://www.kb.cert.org/vuls/id/794544 [No Types Assigned]

Initial Analysis by NIST 2/03/2021 2:42:10 PM

Action Type Old Value New Value
Added CVSS V3.1 
NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added CVSS V2 
NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Added CWE 
NIST CWE-787
Added CPE Configuration 
OR
 *cpe:2.3:a:netapp:oncommand_unified_manager_core_package:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
 *cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*
Added CPE Configuration 
OR
 *cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:* versions up to (excluding) 1.9.5
 *cpe:2.3:a:sudo_project:sudo:1.9.5:patch1:*:*:*:*:*:*
Added CPE Configuration 
OR
 *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Added CPE Configuration 
OR
 *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
 *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Changed Reference Type 
http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html No Types Assigned


 
http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html Third Party Advisory, VDB Entry
Changed Reference Type 
http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html No Types Assigned


 
http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry
Changed Reference Type 
http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html No Types Assigned


 
http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry
Changed Reference Type 
http://www.openwall.com/lists/oss-security/2021/01/26/3 No Types Assigned


 
http://www.openwall.com/lists/oss-security/2021/01/26/3 Exploit, Mailing List, Third Party Advisory
Changed Reference Type 
http://www.openwall.com/lists/oss-security/2021/01/27/1 No Types Assigned


 
http://www.openwall.com/lists/oss-security/2021/01/27/1 Mailing List, Third Party Advisory
Changed Reference Type 
http://www.openwall.com/lists/oss-security/2021/01/27/2 No Types Assigned


 
http://www.openwall.com/lists/oss-security/2021/01/27/2 Mailing List, Third Party Advisory
Changed Reference Type 
https://lists.fedoraproject.org/archives/list/[email protected]/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ No Types Assigned


 
https://lists.fedoraproject.org/archives/list/[email protected]/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ Third Party Advisory
Changed Reference Type 
https://lists.fedoraproject.org/archives/list/[email protected]/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ No Types Assigned


 
https://lists.fedoraproject.org/archives/list/[email protected]/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ Third Party Advisory
Changed Reference Type 
https://security.gentoo.org/glsa/202101-33 No Types Assigned


 
https://security.gentoo.org/glsa/202101-33 Third Party Advisory
Changed Reference Type 
https://security.netapp.com/advisory/ntap-20210128-0001/ No Types Assigned


 
https://security.netapp.com/advisory/ntap-20210128-0001/ Third Party Advisory
Changed Reference Type 
https://security.netapp.com/advisory/ntap-20210128-0002/ No Types Assigned


 
https://security.netapp.com/advisory/ntap-20210128-0002/ Third Party Advisory
Changed Reference Type 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM No Types Assigned


 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM Third Party Advisory
Changed Reference Type 
https://www.debian.org/security/2021/dsa-4839 No Types Assigned


 
https://www.debian.org/security/2021/dsa-4839 Third Party Advisory
Changed Reference Type 
https://www.openwall.com/lists/oss-security/2021/01/26/3 No Types Assigned


 
https://www.openwall.com/lists/oss-security/2021/01/26/3 Exploit, Mailing List, Third Party Advisory
Changed Reference Type 
https://www.sudo.ws/stable.html#1.9.5p2 No Types Assigned


 
https://www.sudo.ws/stable.html#1.9.5p2 Release Notes, Vendor Advisory

CVE Modified by MITRE 2/03/2021 1:15:17 PM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html [No Types Assigned]

CVE Modified by MITRE 2/01/2021 2:15:15 PM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html [No Types Assigned]

CVE Modified by MITRE 1/29/2021 6:15:14 PM

Action Type Old Value New Value
Added Reference 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM [No Types Assigned]

CVE Modified by MITRE 1/28/2021 1:15:12 PM

Action Type Old Value New Value
Added Reference 
https://security.netapp.com/advisory/ntap-20210128-0001/ [No Types Assigned]
Added Reference 
https://security.netapp.com/advisory/ntap-20210128-0002/ [No Types Assigned]

CVE Modified by MITRE 1/28/2021 1:15:14 AM

Action Type Old Value New Value
Changed Description 
Sudo before 1.9.5p2 has a Heap-based Buffer Overflow, allowing privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character:


 
Sudo before 1.9.5p2 has a Heap-based Buffer Overflow, allowing privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.

CVE Modified by MITRE 1/27/2021 11:15:13 AM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html [No Types Assigned]

CVE Modified by MITRE 1/27/2021 8:15:13 AM

Action Type Old Value New Value
Added Reference 
http://www.openwall.com/lists/oss-security/2021/01/27/2 [No Types Assigned]

CVE Modified by MITRE 1/27/2021 5:15:12 AM

Action Type Old Value New Value
Added Reference 
http://www.openwall.com/lists/oss-security/2021/01/27/1 [No Types Assigned]

CVE Modified by MITRE 1/27/2021 1:15:12 AM

Action Type Old Value New Value
Added Reference 
https://lists.fedoraproject.org/archives/list/[email protected]/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/ [No Types Assigned]

CVE Modified by MITRE 1/26/2021 11:15:12 PM

Action Type Old Value New Value
Added Reference 
https://lists.fedoraproject.org/archives/list/[email protected]/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/ [No Types Assigned]
Added Reference 
https://www.debian.org/security/2021/dsa-4839 [No Types Assigned]

CVE Modified by MITRE 1/26/2021 10:15:12 PM

Action Type Old Value New Value
Added Reference 
https://security.gentoo.org/glsa/202101-33 [No Types Assigned]

CVE Modified by MITRE 1/26/2021 5:15:12 PM

Action Type Old Value New Value
Added Reference 
http://www.openwall.com/lists/oss-security/2021/01/26/3 [No Types Assigned]

Quick Info

CVE Dictionary Entry:
CVE-2021-3156
NVD Published Date:
01/26/2021
NVD Last Modified:
06/17/2026
Source:
MITRE