| Name | CVE-2015-6564 |
| Description | Use-after-free vulnerability in the mm_answer_pam_free_ctx function in monitor.c in sshd in OpenSSH before 7.0 on non-OpenBSD platforms might allow local users to gain privileges by leveraging control of the sshd uid to send an unexpectedly early MONITOR_REQ_PAM_FREE_CTX request. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1500-1 |
| Debian Bugs | 795711 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| openssh (PTS) | jessie, jessie (lts) | 1:6.7p1-5+deb8u10 | fixed |
| stretch (security) | 1:7.4p1-10+deb9u6 | fixed |
| stretch (lts), stretch | 1:7.4p1-10+deb9u9 | fixed |
| buster (security), buster, buster (lts) | 1:7.9p1-10+deb10u4 | fixed |
| bullseye (security), bullseye | 1:8.4p1-5+deb11u3 | fixed |
| bookworm (security), bookworm | 1:9.2p1-2+deb12u3 | fixed |
| sid, trixie | 1:9.9p1-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
[wheezy] - openssh <no-dsa> (Minor issue)
[squeeze] - openssh <no-dsa> (Minor issue)
https://anongit.mindrot.org/openssh.git/commit/?id=5e75f5198769056089fb06c4d738ab0e5abc66f7
https://www.openwall.com/lists/oss-security/2015/08/11/9