| Name | CVE-2021-25220 |
| Description | BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients. |
| 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-2955-1, DSA-5105-1, ELA-599-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| bind9 (PTS) | jessie, jessie (lts) | 1:9.9.5.dfsg-9+deb8u31 | fixed |
| stretch (security) | 1:9.10.3.dfsg.P4-12.3+deb9u12 | fixed | |
| stretch (lts), stretch | 1:9.10.3.dfsg.P4-12.3+deb9u16 | fixed | |
| buster, buster (lts) | 1:9.11.5.P4+dfsg-5.1+deb10u13 | fixed | |
| buster (security) | 1:9.11.5.P4+dfsg-5.1+deb10u11 | fixed | |
| bullseye | 1:9.16.50-1~deb11u2 | fixed | |
| bullseye (security) | 1:9.16.50-1~deb11u1 | fixed | |
| bookworm (security), bookworm | 1:9.18.28-1~deb12u2 | fixed | |
| sid, trixie | 1:9.20.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| bind9 | source | jessie | 1:9.9.5.dfsg-9+deb8u27 | ELA-599-1 | ||
| bind9 | source | stretch | 1:9.10.3.dfsg.P4-12.3+deb9u11 | DLA-2955-1 | ||
| bind9 | source | buster | 1:9.11.5.P4+dfsg-5.1+deb10u7 | DSA-5105-1 | ||
| bind9 | source | bullseye | 1:9.16.27-1~deb11u1 | DSA-5105-1 | ||
| bind9 | source | (unstable) | 1:9.18.1-1 |
https://kb.isc.org/docs/cve-2021-25220
Fixed by https://gitlab.isc.org/isc-projects/bind9/-/commit/fc9cb6cf91c1a36b797ffef0a277dbb3989d43dc