CVE-2016-20012

Исходное описание

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. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product

Затронутое ПО

• OpenSSH ≤ 8.7 точное совпадение

Подробности

Опубликовано

2021-09-15

Последнее изменение

2026-06-17

Вектор CVSS

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-203

Ссылки

• cve.org/CVE-2016-20012
• nvd.nist.gov/vuln/detail/CVE-2016-20012
• github.com/openssh/openssh-portable/blob/d0fffc88c8fe90c1815c6f4097bc8cbcabc0f3dd/auth2-pu...
• github.com/openssh/openssh-portable/pull/270
• github.com/openssh/openssh-portable/pull/270#issuecomment-920577097
• github.com/openssh/openssh-portable/pull/270#issuecomment-943909185
• rushter.com/blog/public-ssh-keys/
• security.netapp.com/advisory/ntap-20211014-0005/
• utcc.utoronto.ca/~cks/space/blog/tech/SSHKeysAreInfoLeak
• www.openwall.com/lists/oss-security/2018/08/24/1