| Name | CVE-2021-20208 |
| Description | A flaw was found in cifs-utils in versions before 6.13. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest threat from this vulnerability is to data confidentiality and integrity. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 987308 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| cifs-utils (PTS) | jessie, jessie (lts) | 2:6.4-1+deb8u1 | vulnerable |
| stretch (security), stretch (lts), stretch | 2:6.7-1+deb9u1 | vulnerable |
| buster (security), buster, buster (lts) | 2:6.8-2+deb10u1 | vulnerable |
| bullseye | 2:6.11-3.1+deb11u2 | fixed |
| bullseye (security) | 2:6.11-3.1+deb11u1 | fixed |
| bookworm | 2:7.0-2 | fixed |
| sid, trixie | 2:7.0-2.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| cifs-utils | source | (unstable) | 2:6.11-3 | | | 987308 |
Notes
[buster] - cifs-utils <no-dsa> (Minor issue)
[stretch] - cifs-utils <no-dsa> (Minor issue)
https://bugzilla.samba.org/show_bug.cgi?id=14651
https://lists.samba.org/archive/samba-technical/2021-April/136467.html
https://git.samba.org/cifs-utils.git/?p=cifs-utils.git;a=commit;h=e461afd8cfa6d0781ae0c5c10e89b6ef1ca6da32
Fix causes regression: https://bugs.debian.org/989080
[jessie] - cifs-utils <no-dsa> (Minor issue)