| Name | CVE-2020-8625 |
| Description | BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or tkey-gssapi-credentialconfiguration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. The most likely outcome of a successful exploitation of the vulnerability is a crash of the named process. However, remote code execution, while unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch |
| 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-2568-1, DSA-4857-1 |
| Debian Bugs | 983004 |
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, sid | 1:9.20.3-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| bind9 | source | stretch | 1:9.10.3.dfsg.P4-12.3+deb9u8 | DLA-2568-1 | ||
| bind9 | source | buster | 1:9.11.5.P4+dfsg-5.1+deb10u3 | DSA-4857-1 | ||
| bind9 | source | (unstable) | 1:9.16.12-1 | 983004 |
https://kb.isc.org/v1/docs/cve-2020-8625
9.11 branch: https://downloads.isc.org/isc/bind9/9.11.28/patches
9.16 branch: https://downloads.isc.org/isc/bind9/9.16.12/patches
https://gitlab.isc.org/isc-projects/bind9/commit/b04cb88462863d762093760ffcfe1946200e30f5