| Name | CVE-2020-8622 |
| Description | In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit. |
| 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-2355-1, DSA-4752-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| bind9 (PTS) | bullseye | 1:9.16.50-1~deb11u2 | fixed |
| bullseye (security) | 1:9.16.50-1~deb11u1 | fixed | |
| bookworm, bookworm (security) | 1:9.18.28-1~deb12u2 | fixed | |
| trixie | 1:9.20.4-2 | fixed | |
| sid | 1:9.20.4-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| bind9 | source | stretch | 1:9.10.3.dfsg.P4-12.3+deb9u7 | DLA-2355-1 | ||
| bind9 | source | buster | 1:9.11.5.P4+dfsg-5.1+deb10u2 | DSA-4752-1 | ||
| bind9 | source | (unstable) | 1:9.16.6-1 |
https://kb.isc.org/docs/cve-2020-8622
https://gitlab.isc.org/isc-projects/bind9/commit/0eec632d6a5a474280017ec949d8a8014612f3b3 (v9_16_6)
https://gitlab.isc.org/isc-projects/bind9/commit/6ed167ad0a647dff20c8cb08c944a7967df2d415 (v9_11_22)