| Name | CVE-2021-20251 |
| Description | A flaw was found in samba. A race condition in the password lockout code may lead to the risk of brute force attacks being successful if special conditions are met. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| samba (PTS) | jessie, jessie (lts) | 2:4.2.14+dfsg-0+deb8u16 | vulnerable |
| stretch (security) | 2:4.5.16+dfsg-1+deb9u4 | vulnerable |
| stretch (lts), stretch | 2:4.5.16+dfsg-1+deb9u5 | vulnerable |
| buster (security), buster, buster (lts) | 2:4.9.5+dfsg-5+deb10u5 | vulnerable |
| bullseye (security), bullseye | 2:4.13.13+dfsg-1~deb11u6 | vulnerable |
| bookworm (security), bookworm | 2:4.17.12+dfsg-0+deb12u1 | fixed |
| sid, trixie | 2:4.21.1+dfsg-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| samba | source | experimental | 2:4.17.1+dfsg-1 | | | |
| samba | source | (unstable) | 2:4.17.2+dfsg-3 | | | |
Notes
[bullseye] - samba <ignored> (Domain controller functionality is EOLed, see DSA DSA-5477-1)
[buster] - samba <ignored> (Domain controller functionality is EOLed, see DSA-5015-1)
https://bugzilla.samba.org/show_bug.cgi?id=14611
https://gitlab.com/samba-team/samba/-/merge_requests/2708
[stretch] - samba <ignored> (Domain controller functionality is EOLed)
[jessie] - samba <ignored> (Domain controller functionality is EOLed)