| Name | CVE-2021-41617 |
| Description | sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user. |
| 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-3694-1, ELA-1038-1, ELA-1055-1 |
| Debian Bugs | 995130 |
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 | vulnerable | |
| 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.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| openssh | source | jessie | 1:6.7p1-5+deb8u10 | ELA-1055-1 | ||
| openssh | source | stretch | 1:7.4p1-10+deb9u9 | ELA-1038-1 | ||
| openssh | source | buster | 1:7.9p1-10+deb10u4 | DLA-3694-1 | ||
| openssh | source | bullseye | 1:8.4p1-5+deb11u3 | |||
| openssh | source | (unstable) | 1:8.7p1-1 | 995130 |
[stretch] - openssh <no-dsa> (Minor issue)
https://www.openwall.com/lists/oss-security/2021/09/26/1
https://github.com/openssh/openssh-portable/commit/f3cbe43e28fe71427d41cfe3a17125b972710455
https://github.com/openssh/openssh-portable/commit/bf944e3794eff5413f2df1ef37cddf96918c6bde