GHSA-84j4-ccmw-hwpgMediumCVSS 5.3
OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of...
🔗 CVE IDs covered (1)
📋 Description
OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session.
🔗 References (10)
- https://nvd.nist.gov/vuln/detail/CVE-2016-20012
- https://github.com/openssh/openssh-portable/pull/270
- https://github.com/openssh/openssh-portable/pull/270#issuecomment-920577097
- https://github.com/openssh/openssh-portable/pull/270#issuecomment-943909185
- https://github.com/openssh/openssh-portable/blob/d0fffc88c8fe90c1815c6f4097bc8cbcabc0f3dd/auth2-pubkey.c#L261-L265
- https://utcc.utoronto.ca/~cks/space/blog/tech/SSHKeysAreInfoLeak
- https://www.openwall.com/lists/oss-security/2018/08/24/1
- https://rushter.com/blog/public-ssh-keys
- https://security.netapp.com/advisory/ntap-20211014-0005
- https://github.com/advisories/GHSA-84j4-ccmw-hwpg