[{"vendor":"putty","product":"putty","defaultStatus":"unknown","cpes":["cpe:2.3:a:putty:putty:-:*:*:*:*:*:*:*"],"versions":[{"version":"0.68","lessThan":"0.81","versionType":"semver","status":"affected"}]}]

{"timestamp":"2024-04-19T04:01:10.059065Z","id":"CVE-2024-31497","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]

https://lists.fedoraproject.org/archives/list/[email protected]/message/MMHILY2K7HQGQRHOC375KRRG2M6625RD/

https://lists.fedoraproject.org/archives/list/[email protected]/message/WMJH7M663BVO3SY6MFAW2FAZWLLXAPRQ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/IZS3B37GNGWOOV7QU7B7JFK76U4TOP4V/

https://lists.fedoraproject.org/archives/list/[email protected]/message/PUOTQVGC4DISVHQGSPUYGXO6TLDK65LA/

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE-338

http://www.openwall.com/lists/oss-security/2024/04/15/6

https://bugzilla.redhat.com/show_bug.cgi?id=2275183

https://bugzilla.suse.com/show_bug.cgi?id=1222864

https://docs.ccv.brown.edu/oscar/connecting-to-oscar/ssh/ssh-agent-forwarding/key-generation-and-agent-forwarding-with-putty

https://filezilla-project.org/versions.php

https://git.tartarus.org/?h=c193fe9848f50a88a4089aac647fecc31ae96d27&p=simon/putty.git

https://github.com/advisories/GHSA-6p4c-r453-8743

https://github.com/daedalus/BreakingECDSAwithLLL

https://lists.debian.org/debian-lts-announce/2024/06/msg00014.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZS3B37GNGWOOV7QU7B7JFK76U4TOP4V/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMHILY2K7HQGQRHOC375KRRG2M6625RD/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PUOTQVGC4DISVHQGSPUYGXO6TLDK65LA/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WFDZBV7ZCAZ6AH3VCQ34SSY7L3J7VZXZ/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WMJH7M663BVO3SY6MFAW2FAZWLLXAPRQ/

https://news.ycombinator.com/item?id=40044665

https://security-tracker.debian.org/tracker/CVE-2024-31497

https://securityonline.info/cve-2024-31497-critical-putty-vulnerability-exposes-private-keys-immediate-action-required/

https://tartarus.org/~simon/putty-snapshots/htmldoc/Chapter9.html#pageant-forward

https://tortoisegit.org

https://twitter.com/CCBalert/status/1780229237569470549

https://twitter.com/lambdafu/status/1779969509522133272

https://winscp.net/eng/news.php

https://www.bleepingcomputer.com/news/security/putty-ssh-client-flaw-allows-recovery-of-cryptographic-private-keys/

https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html

https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-p521-bias.html

https://www.openwall.com/lists/oss-security/2024/04/15/6

https://www.reddit.com/r/sysadmin/comments/1c4wmoj/putty_vulnerability_affecting_v068_to_v08/

https://www.vicarius.io/vsociety/posts/understanding-a-critical-vulnerability-in-putty-biased-ecdsa-nonce-generation-revealing-nist-p-521-private-keys-cve-2024-31497

MITRE https://lists.debian.org/debian-lts-announce/2024/06/msg00014.html [No types assigned]

NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

NIST CWE-338

OR
 *cpe:2.3:a:filezilla-project:filezilla_client:*:*:*:*:*:*:*:* versions up to (excluding) 3.67.0

OR
 *cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:* versions from (including) 0.68 up to (excluding) 0.81

OR
 *cpe:2.3:a:tigris:tortoisesvn:*:*:*:*:*:*:*:* versions up to (excluding) 1.14.6

OR
 *cpe:2.3:a:tortoisegit:tortoisegit:*:*:*:*:*:*:*:* versions up to (excluding) 2.15.0.1

OR
 *cpe:2.3:a:winscp:winscp:*:*:*:*:*:*:*:* versions up to (excluding) 6.3.3

OR
 *cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
 *cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
 *cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

http://www.openwall.com/lists/oss-security/2024/04/15/6 No Types Assigned

http://www.openwall.com/lists/oss-security/2024/04/15/6 Mailing List, Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2275183 No Types Assigned

https://bugzilla.redhat.com/show_bug.cgi?id=2275183 Issue Tracking

https://bugzilla.suse.com/show_bug.cgi?id=1222864 No Types Assigned

https://bugzilla.suse.com/show_bug.cgi?id=1222864 Issue Tracking

https://docs.ccv.brown.edu/oscar/connecting-to-oscar/ssh/ssh-agent-forwarding/key-generation-and-agent-forwarding-with-putty No Types Assigned

https://docs.ccv.brown.edu/oscar/connecting-to-oscar/ssh/ssh-agent-forwarding/key-generation-and-agent-forwarding-with-putty Product

https://filezilla-project.org/versions.php No Types Assigned

https://filezilla-project.org/versions.php Release Notes

https://git.tartarus.org/?h=c193fe9848f50a88a4089aac647fecc31ae96d27&p=simon/putty.git No Types Assigned

https://git.tartarus.org/?h=c193fe9848f50a88a4089aac647fecc31ae96d27&p=simon/putty.git Mailing List, Patch

https://github.com/advisories/GHSA-6p4c-r453-8743 No Types Assigned

https://github.com/advisories/GHSA-6p4c-r453-8743 Third Party Advisory

https://github.com/daedalus/BreakingECDSAwithLLL No Types Assigned

https://github.com/daedalus/BreakingECDSAwithLLL Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZS3B37GNGWOOV7QU7B7JFK76U4TOP4V/ No Types Assigned

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZS3B37GNGWOOV7QU7B7JFK76U4TOP4V/ Mailing List, Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMHILY2K7HQGQRHOC375KRRG2M6625RD/ No Types Assigned

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMHILY2K7HQGQRHOC375KRRG2M6625RD/ Mailing List, Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PUOTQVGC4DISVHQGSPUYGXO6TLDK65LA/ No Types Assigned

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PUOTQVGC4DISVHQGSPUYGXO6TLDK65LA/ Mailing List, Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WFDZBV7ZCAZ6AH3VCQ34SSY7L3J7VZXZ/ No Types Assigned

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WFDZBV7ZCAZ6AH3VCQ34SSY7L3J7VZXZ/ Mailing List, Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WMJH7M663BVO3SY6MFAW2FAZWLLXAPRQ/ No Types Assigned

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WMJH7M663BVO3SY6MFAW2FAZWLLXAPRQ/ Mailing List, Third Party Advisory

https://news.ycombinator.com/item?id=40044665 No Types Assigned

https://news.ycombinator.com/item?id=40044665 Issue Tracking

https://security-tracker.debian.org/tracker/CVE-2024-31497 No Types Assigned

https://security-tracker.debian.org/tracker/CVE-2024-31497 Third Party Advisory

https://securityonline.info/cve-2024-31497-critical-putty-vulnerability-exposes-private-keys-immediate-action-required/ No Types Assigned

https://securityonline.info/cve-2024-31497-critical-putty-vulnerability-exposes-private-keys-immediate-action-required/ Press/Media Coverage

https://tartarus.org/~simon/putty-snapshots/htmldoc/Chapter9.html#pageant-forward No Types Assigned

https://tartarus.org/~simon/putty-snapshots/htmldoc/Chapter9.html#pageant-forward Product

https://tortoisegit.org No Types Assigned

https://tortoisegit.org Third Party Advisory

https://twitter.com/CCBalert/status/1780229237569470549 No Types Assigned

https://twitter.com/CCBalert/status/1780229237569470549 Press/Media Coverage

https://twitter.com/lambdafu/status/1779969509522133272 No Types Assigned

https://twitter.com/lambdafu/status/1779969509522133272 Press/Media Coverage

https://winscp.net/eng/news.php No Types Assigned

https://winscp.net/eng/news.php Third Party Advisory

https://www.bleepingcomputer.com/news/security/putty-ssh-client-flaw-allows-recovery-of-cryptographic-private-keys/ No Types Assigned

https://www.bleepingcomputer.com/news/security/putty-ssh-client-flaw-allows-recovery-of-cryptographic-private-keys/ Press/Media Coverage

https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html No Types Assigned

https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html Release Notes, Vendor Advisory

https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-p521-bias.html No Types Assigned

https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-p521-bias.html Vendor Advisory

https://www.openwall.com/lists/oss-security/2024/04/15/6 No Types Assigned

https://www.openwall.com/lists/oss-security/2024/04/15/6 Mailing List, Third Party Advisory

https://www.reddit.com/r/sysadmin/comments/1c4wmoj/putty_vulnerability_affecting_v068_to_v08/ No Types Assigned

https://www.reddit.com/r/sysadmin/comments/1c4wmoj/putty_vulnerability_affecting_v068_to_v08/ Press/Media Coverage

MITRE http://www.openwall.com/lists/oss-security/2024/04/15/6 [No types assigned]

MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PUOTQVGC4DISVHQGSPUYGXO6TLDK65LA/ [No types assigned]

MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WFDZBV7ZCAZ6AH3VCQ34SSY7L3J7VZXZ/ [No types assigned]

MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZS3B37GNGWOOV7QU7B7JFK76U4TOP4V/ [No types assigned]

MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMHILY2K7HQGQRHOC375KRRG2M6625RD/ [No types assigned]

MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WMJH7M663BVO3SY6MFAW2FAZWLLXAPRQ/ [No types assigned]

MITRE https://github.com/daedalus/BreakingECDSAwithLLL [No types assigned]

MITRE https://securityonline.info/cve-2024-31497-critical-putty-vulnerability-exposes-private-keys-immediate-action-required/ [No types assigned]

MITRE https://twitter.com/CCBalert/status/1780229237569470549 [No types assigned]

MITRE https://www.bleepingcomputer.com/news/security/putty-ssh-client-flaw-allows-recovery-of-cryptographic-private-keys/ [No types assigned]

MITRE https://www.reddit.com/r/sysadmin/comments/1c4wmoj/putty_vulnerability_affecting_v068_to_v08/ [No types assigned]

In PuTTY 0.68 through 0.80 before 0.81, biased ECDSA nonce generation allows an attacker to recover a user's NIST P-521 secret key via a quick attack in approximately 60 signatures. This is especially important in a scenario where an adversary is able to read messages signed by PuTTY or Pageant. One scenario is that the adversary is an operator of an SSH server to which the victim authenticates (for remote login or file copy), even though this server is not fully trusted by the victim, and the victim uses the same private key for SSH connections to other services operated by other entities. Here, the rogue server operator (who would otherwise have no way to determine the victim's private key) can derive the victim's private key, and then use it for unauthorized access to those other services. Because SSH is sometimes used to authenticate to Git services, it is possible that this vulnerability could be leveraged for supply-chain attacks on software maintained in Git. It is also conceivable that signed messages from PuTTY or Pageant are readable by adversaries more easily in other scenarios, but none have yet been disclosed.

In PuTTY 0.68 through 0.80 before 0.81, biased ECDSA nonce generation allows an attacker to recover a user's NIST P-521 secret key via a quick attack in approximately 60 signatures. This is especially important in a scenario where an adversary is able to read messages signed by PuTTY or Pageant. The required set of signed messages may be publicly readable because they are stored in a public Git service that supports use of SSH for commit signing, and the signatures were made by Pageant through an agent-forwarding mechanism. In other words, an adversary may already have enough signature information to compromise a victim's private key, even if there is no further use of vulnerable PuTTY versions. After a key compromise, an adversary may be able to conduct supply-chain attacks on software maintained in Git. A second, independent scenario is that the adversary is an operator of an SSH server to which the victim authenticates (for remote login or file copy), even though this server is not fully trusted by the victim, and the victim uses the same private key for SSH connections to other services operated by other entities. Here, the rogue server operator (who would otherwise have no way to determine the victim's private key) can derive the victim's private key, and then use it for unauthorized access to those other services. If the other services include Git services, then again it may be possible to conduct supply-chain attacks on software maintained in Git. This also affects, for example, FileZilla before 3.67.0, WinSCP before 6.3.3, TortoiseGit before 2.15.0.1, and TortoiseSVN through 1.14.6.

MITRE https://bugzilla.redhat.com/show_bug.cgi?id=2275183 [No types assigned]

MITRE https://bugzilla.suse.com/show_bug.cgi?id=1222864 [No types assigned]

MITRE https://docs.ccv.brown.edu/oscar/connecting-to-oscar/ssh/ssh-agent-forwarding/key-generation-and-agent-forwarding-with-putty [No types assigned]

MITRE https://filezilla-project.org/versions.php [No types assigned]

MITRE https://git.tartarus.org/?h=c193fe9848f50a88a4089aac647fecc31ae96d27&p=simon/putty.git [No types assigned]

MITRE https://github.com/advisories/GHSA-6p4c-r453-8743 [No types assigned]

MITRE https://news.ycombinator.com/item?id=40044665 [No types assigned]

MITRE https://security-tracker.debian.org/tracker/CVE-2024-31497 [No types assigned]

MITRE https://tartarus.org/~simon/putty-snapshots/htmldoc/Chapter9.html#pageant-forward [No types assigned]

MITRE https://tortoisegit.org [No types assigned]

MITRE https://twitter.com/lambdafu/status/1779969509522133272 [No types assigned]

MITRE https://winscp.net/eng/news.php [No types assigned]

MITRE https://www.openwall.com/lists/oss-security/2024/04/15/6 [No types assigned]

In PuTTY 0.68 through 0.80 before 0.81, biased ECDSA nonce generation allows an attacker to recover a user's NIST P-521 secret key via a quick attack in approximately 60 signatures. This is especially important in a scenario where an adversary is able to read messages signed by PuTTY or Pageant. One scenario is that the adversary is an operator of an SSH server to which the victim authenticates (for remote login or file copy), even though this server is not fully trusted by the victim, and the victim uses the same private key for SSH connections to other services operated by other entities. Here, the rogue server operator (who would otherwise have no way to determine the victim's private key) can derive the victim's private key, and then use it for unauthorized access to those other services. Because SSH is sometimes used to authenticate to Git services, it is possible that this vulnerability could be leveraged for supply-chain attacks on software maintained in Git. It is also conceivable that signed messages from PuTTY or Pageant are readable by adversaries more easily in other scenarios, but none have yet been disclosed.

MITRE https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html [No types assigned]

MITRE https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-p521-bias.html [No types assigned]