GHSA-4fcc-vm97-gx3xHighCVSS 8.1
sshd in OpenSSH before 10.6p2 on Linux, when musl libc is used without PAM, lacks a workaround...
🔗 CVE IDs covered (1)
📋 Description
sshd in OpenSSH before 10.6p2 on Linux, when musl libc is used without PAM, lacks a workaround for a password authentication bypass (related to misinterpretation of whether a string is intended to be a password hash). For some configurations of accounts, any password between 256 and 1024 characters succeeds. An example of a platform using musl libc without PAM is Alpine Linux.
🔗 References (16)
- https://nvd.nist.gov/vuln/detail/CVE-2026-123158
- https://github.com/openssh/openssh-portable/commit/4353fdc43ef646c43a8dda7025cc1a898caf1482
- https://alpinelinux.org/posts/2026-11-05-openssh-password-authentication-bypass
- https://github.com/leonjza/sshhole-lab
- https://github.com/predkambrij/sshhole-repro
- https://hachyderm.io/@damienmiller/117563026759098135
- https://marc.info/?l=openssh-unix-dev&m=179388064263131&w=2
- https://news.ycombinator.com/item?id=50377976
- https://news.ycombinator.com/item?id=50378228
- https://news.ycombinator.com/item?id=50379704
- https://sshhole.com
- https://www.openssh.org/releasenotes.html#10.6p2
- https://github.com/google/goonami-scanner/pull/277
- https://github.com/panubo/docker-sshd/issues/93
- https://github.com/coollabsio/coolify/discussions/12484
- https://github.com/advisories/GHSA-4fcc-vm97-gx3x