CVE-2023-2911
Fixed in a distro release EPSS 2%CVSS 7.5
If the `recursive-clients` quota is reached on a BIND 9 resolver configured with both `stale-answer-enable yes;` and `stale-answer-client-timeout 0;`, a sequence of serve-stale-related lookups could cause `named` to loop and terminate unexpectedly due to a stack overflow. This issue affects BIND 9 versions 9.16.33 through 9.16.41, 9.18.7 through 9.18.15, 9.16.33-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.
Products: ISC BIND 9
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.15 | bind | 9.16.42-r0 |
| Debian 11 | bind9 | 1:9.16.42-1~deb11u1 |
| Debian 12 | bind9 | 1:9.18.16-1~deb12u1 |
| Debian 13 | bind9 | 1:9.18.16-1 |
| Debian 14 | bind9 | 1:9.18.16-1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | bind | 9.16.42-150400.5.27.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | bind | 9.16.42-150500.8.3.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | bind | 9.16.42-150400.5.27.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | bind | 9.16.42-150500.8.3.1 |
| Ubuntu 20.04 LTS | bind9 | 1:9.16.1-0ubuntu2.15 |
| Ubuntu 22.04 LTS | bind9 | 1:9.18.12-0ubuntu0.22.04.2 |
| openSUSE Leap 15.4 | bind | 9.16.42-150400.5.27.1 |
| openSUSE Leap 15.5 | bind | 9.16.42-150500.8.3.1 |
| openSUSE Tumbleweed | bind | 9.18.16-1.1 |