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URL: https://nvd.nist.gov/vuln/detail/CVE-2018-20685

⇱ NVD - CVE-2018-20685

  1. Vulnerabilities

CVE-2018-20685 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.


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://www.securityfocus.com/bid/106531 CVE, MITRE Broken Link 
https://access.redhat.com/errata/RHSA-2019:3702 CVE, MITRE Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf CVE, MITRE Patch  Third Party Advisory 
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h CVE, MITRE Patch 
https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2 CVE, MITRE Patch 
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html CVE, MITRE Mailing List  Third Party Advisory 
https://security.gentoo.org/glsa/201903-16 CVE, MITRE Third Party Advisory 
https://security.gentoo.org/glsa/202007-53 CVE, MITRE Third Party Advisory 
https://security.netapp.com/advisory/ntap-20190215-0001/ CVE, MITRE Third Party Advisory 
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt CVE, MITRE Patch  Third Party Advisory 
https://usn.ubuntu.com/3885-1/ CVE, MITRE Third Party Advisory 
https://www.debian.org/security/2019/dsa-4387 CVE, MITRE Third Party Advisory 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html CVE, MITRE Patch  Third Party Advisory 
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html CVE, MITRE Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-863 Incorrect Authorization 👁 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

24 change records found show changes

CVE Modified by CISA-ADP 6/16/2026 9:53:19 PM

Action Type Old Value New Value
Added SSVC 
{"timestamp":"2025-12-17T21:53:24.729008Z","id":"CVE-2018-20685","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by MITRE 6/16/2026 9:53:19 PM

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

CVE Modified by CISA-ADP 12/17/2025 5:15:55 PM

Action Type Old Value New Value
Added CVSS V3.1 
AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Added CWE 
CWE-863

CVE Modified by CVE 11/20/2024 11:01:59 PM

Action Type Old Value New Value
Added Reference 
http://www.securityfocus.com/bid/106531
Added Reference 
https://access.redhat.com/errata/RHSA-2019:3702
Added Reference 
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Added Reference 
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h
Added Reference 
https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2
Added Reference 
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
Added Reference 
https://security.gentoo.org/glsa/201903-16
Added Reference 
https://security.gentoo.org/glsa/202007-53
Added Reference 
https://security.netapp.com/advisory/ntap-20190215-0001/
Added Reference 
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
Added Reference 
https://usn.ubuntu.com/3885-1/
Added Reference 
https://www.debian.org/security/2019/dsa-4387
Added Reference 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
Added Reference 
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

CVE Modified by MITRE 5/14/2024 1:14:51 AM

Action Type Old Value New Value

Modified Analysis by NIST 2/23/2023 6:15:18 PM

Action Type Old Value New Value
Added CVSS V3.1 
NIST AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Removed CVSS V3 
NIST AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Changed CPE Configuration 
OR
 *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*
 *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m10-1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp2361
 OR
 cpe:2.3:h:fujitsu:m10-1:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m10-1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp3070
 OR
 cpe:2.3:h:fujitsu:m10-1:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m10-4_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp2361
 OR
 cpe:2.3:h:fujitsu:m10-4:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m10-4_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp3070
 OR
 cpe:2.3:h:fujitsu:m10-4:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp2361
 OR
 cpe:2.3:h:fujitsu:m10-4s:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp3070
 OR
 cpe:2.3:h:fujitsu:m10-4s:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp3070
 OR
 cpe:2.3:h:fujitsu:m10-4s:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m12-1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp2361
 OR
 cpe:2.3:h:fujitsu:m12-1:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m12-1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp3070
 OR
 cpe:2.3:h:fujitsu:m12-1:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m12-2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp2361
 OR
 cpe:2.3:h:fujitsu:m12-2:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m12-2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp3070
 OR
 cpe:2.3:h:fujitsu:m12-2:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m12-2s_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp2361
 OR
 cpe:2.3:h:fujitsu:m12-2s:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:fujitsu:m12-2s_firmware:*:*:*:*:*:*:*:* versions up to (excluding) xcp3070
 OR
 cpe:2.3:h:fujitsu:m12-2s:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:siemens:scalance_x204rna_eec_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.2.7
 OR
 cpe:2.3:h:siemens:scalance_x204rna_eec:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.2.7
 OR
 cpe:2.3:h:siemens:scalance_x204rna:-:*:*:*:*:*:*:*
Changed Reference Type 
http://www.securityfocus.com/bid/106531 Third Party Advisory, VDB Entry


 
http://www.securityfocus.com/bid/106531 Broken Link
Changed Reference Type 
https://access.redhat.com/errata/RHSA-2019:3702 No Types Assigned


 
https://access.redhat.com/errata/RHSA-2019:3702 Third Party Advisory
Changed Reference Type 
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf No Types Assigned


 
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf Patch, Third Party Advisory
Changed Reference Type 
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h Patch, Third Party Advisory


 
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h Patch
Changed Reference Type 
https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2 Patch, Third Party Advisory


 
https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2 Patch
Changed Reference Type 
https://security.gentoo.org/glsa/202007-53 No Types Assigned


 
https://security.gentoo.org/glsa/202007-53 Third Party Advisory
Changed Reference Type 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch


 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch, Third Party Advisory
Changed Reference Type 
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html No Types Assigned


 
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html Patch, Third Party Advisory

CVE Modified by MITRE 12/13/2022 7:15:25 AM

Action Type Old Value New Value
Added Reference 
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf [No Types Assigned]

CWE Remap by NIST 8/24/2020 1:37:01 PM

Action Type Old Value New Value
Changed CWE 
CWE-706



CWE-863


CVE Modified by MITRE 7/28/2020 5:15:13 PM

Action Type Old Value New Value
Added Reference 
https://security.gentoo.org/glsa/202007-53 [No Types Assigned]
Removed Reference 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-20685 [Issue Tracking, Patch, Third Party Advisory]

CVE Modified by MITRE 11/05/2019 8:15:18 PM

Action Type Old Value New Value
Added Reference 
https://access.redhat.com/errata/RHSA-2019:3702 [No Types Assigned]

CVE Modified by MITRE 10/16/2019 2:15:19 PM

Action Type Old Value New Value
Added Reference 
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html [No Types Assigned]

CWE Remap by NIST 10/02/2019 8:03:26 PM

Action Type Old Value New Value
Changed CWE 
CWE-284
CWE-284



CWE-706


Modified Analysis by NIST 4/25/2019 8:55:29 AM

Action Type Old Value New Value
Added CPE Configuration 
OR
 *cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:*
Added CPE Configuration 
OR
 *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Changed Reference Type 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html No Types Assigned


 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch

CVE Modified by MITRE 4/23/2019 3:32:01 PM

Action Type Old Value New Value
Added Reference 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html [No Types Assigned]

Modified Analysis by NIST 3/29/2019 4:02:39 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
 *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Changed Reference Type 
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html No Types Assigned


 
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html Mailing List, Third Party Advisory
Changed Reference Type 
https://security.gentoo.org/glsa/201903-16 No Types Assigned


 
https://security.gentoo.org/glsa/201903-16 Third Party Advisory

CVE Modified by MITRE 3/25/2019 12:29:03 PM

Action Type Old Value New Value
Added Reference 
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html [No Types Assigned]

CVE Modified by MITRE 3/21/2019 12:00:37 PM

Action Type Old Value New Value
Added Reference 
https://security.gentoo.org/glsa/201903-16 [No Types Assigned]

Modified Analysis by NIST 2/26/2019 4:24:08 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:a:openbsd:openssh:7.9:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* versions up to (including) 7.9
 *cpe:2.3:a:winscp:winscp:*:*:*:*:*:*:*:* versions up to (including) 5.13
Added CPE Configuration 
OR
 *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:ontap_select_deploy:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
 *cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:*
Added CPE Configuration 
OR
 *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
 *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
 *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
 *cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
Added CPE Configuration 
OR
 *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Changed Reference Type 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-20685 Patch, Third Party Advisory


 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-20685 Issue Tracking, Patch, Third Party Advisory
Changed Reference Type 
https://security.netapp.com/advisory/ntap-20190215-0001/ No Types Assigned


 
https://security.netapp.com/advisory/ntap-20190215-0001/ Third Party Advisory
Changed Reference Type 
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt No Types Assigned


 
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt Patch, Third Party Advisory
Changed Reference Type 
https://usn.ubuntu.com/3885-1/ No Types Assigned


 
https://usn.ubuntu.com/3885-1/ Third Party Advisory
Changed Reference Type 
https://www.debian.org/security/2019/dsa-4387 No Types Assigned


 
https://www.debian.org/security/2019/dsa-4387 Third Party Advisory

CVE Modified by MITRE 2/16/2019 6:29:00 AM

Action Type Old Value New Value
Added Reference 
https://security.netapp.com/advisory/ntap-20190215-0001/ [No Types Assigned]

CVE Modified by MITRE 2/10/2019 6:29:00 AM

Action Type Old Value New Value
Added Reference 
https://www.debian.org/security/2019/dsa-4387 [No Types Assigned]

CVE Modified by MITRE 2/09/2019 6:29:09 AM

Action Type Old Value New Value
Added Reference 
https://usn.ubuntu.com/3885-1/ [No Types Assigned]

CVE Modified by MITRE 1/31/2019 1:29:00 PM

Action Type Old Value New Value
Changed Description 
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename.


 
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.
Added Reference 
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt [No Types Assigned]

Initial Analysis by NIST 1/29/2019 10:46:11 AM

Action Type Old Value New Value
Added CVSS V3 
AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Added CVSS V2 
(AV:N/AC:H/Au:N/C:N/I:P/A:N)
Added CWE 
CWE-284
Added CPE Configuration 
OR
 *cpe:2.3:a:openbsd:openssh:7.9:*:*:*:*:*:*:*
Added Reference 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-20685 [Patch, Third Party Advisory]
Changed Reference Type 
http://www.securityfocus.com/bid/106531 No Types Assigned


 
http://www.securityfocus.com/bid/106531 Third Party Advisory, VDB Entry
Changed Reference Type 
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h No Types Assigned


 
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h Patch, Third Party Advisory
Changed Reference Type 
https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2 No Types Assigned


 
https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2 Patch, Third Party Advisory
Added CVSS V2 Metadata 
Victim must voluntarily interact with attack mechanism

CVE Modified by MITRE 1/12/2019 6:29:01 AM

Action Type Old Value New Value
Added Reference 
http://www.securityfocus.com/bid/106531 [No Types Assigned]

Quick Info

CVE Dictionary Entry:
CVE-2018-20685
NVD Published Date:
01/10/2019
NVD Last Modified:
06/16/2026
Source:
MITRE