| Name | CVE-2022-3620 |
| Description | A vulnerability was found in Exim and classified as problematic. This issue affects the function dmarc_dns_lookup of the file dmarc.c of the component DMARC Handler. The manipulation leads to use after free. The attack may be initiated remotely. The name of the patch is 12fb3842f81bcbd4a4519d5728f2d7e0e3ca1445. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211919. |
| 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 | 1022556 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| exim4 (PTS) | jessie, jessie (lts) | 4.84.2-2+deb8u12 | vulnerable |
| stretch (security) | 4.89-2+deb9u8 | vulnerable |
| stretch (lts), stretch | 4.89-2+deb9u13 | vulnerable |
| buster, buster (lts) | 4.92-8+deb10u10 | fixed |
| buster (security) | 4.92-8+deb10u9 | fixed |
| bullseye | 4.94.2-7+deb11u3 | fixed |
| bullseye (security) | 4.94.2-7+deb11u4 | fixed |
| bookworm | 4.96-15+deb12u6 | fixed |
| bookworm (security) | 4.96-15+deb12u5 | fixed |
| sid, trixie | 4.98-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| exim4 | source | buster | (not affected) | | | |
| exim4 | source | bullseye | (not affected) | | | |
| exim4 | source | (unstable) | 4.96-7 | unimportant | | 1022556 |
Notes
[bullseye] - exim4 <not-affected> (Vulnerable code not present)
[buster] - exim4 <not-affected> (Vulnerable code not present)
Introduced by: https://git.exim.org/exim.git/commit/92583637b25b6bde926f9ca6be7b085e5ac8b1e6 (exim-4.95-RC0)
Fixed by: https://git.exim.org/exim.git/commit/12fb3842f81bcbd4a4519d5728f2d7e0e3ca1445
Debian binary packages not built with DMARC support