bind9: A flaw in the networking code handling DNS-over-TLS queries may cause `named` to terminate unexpectedly due to an ass...
CVE-2023-4236 is fixed in 7 products on 1 platform, first by bind9 1:9.18.12-0ubuntu0.22.04.3, released September 19, 2023. It is not reported as exploited. Patch Radar priority: High.
A flaw in the networking code handling DNS-over-TLS queries may cause `named` to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query load. This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bind9 · Debian 12.15 (bookworm) | 1:9.18.19-1~deb12u1 | DEBIAN-CVE-2023-4236 | Sep 20, 2023 |
| bind9 · Debian 13.5 (trixie) | 1:9.19.17-1 | DEBIAN-CVE-2023-4236 | Sep 20, 2023 |
| bind9 · Debian 14 | 1:9.19.17-1 | DEBIAN-CVE-2023-4236 | Sep 20, 2023 |
| bind9 · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.12-0ubuntu0.22.04.3 | bind9 1:9.18.12-0ubuntu0.22.04.3 | Sep 19, 2023 |
| bind9 · Ubuntu 24.04.5 LTS (noble) | 1:9.18.18-0ubuntu2 | bind9 1:9.18.18-0ubuntu2 | Sep 19, 2023 |
| bind9 · Ubuntu 24.10 (oracular) | 1:9.18.18-0ubuntu2 | bind9 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9 · Ubuntu 25.04 (plucky) | 1:9.18.18-0ubuntu2 | bind9 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9-dnsutils · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.12-0ubuntu0.22.04.3 | bind9-dnsutils 1:9.18.12-0ubuntu0.22.04.3 | Sep 19, 2023 |
| bind9-dnsutils · Ubuntu 24.04.5 LTS (noble) | 1:9.18.18-0ubuntu2 | bind9-dnsutils 1:9.18.18-0ubuntu2 | Sep 19, 2023 |
| bind9-dnsutils · Ubuntu 24.10 (oracular) | 1:9.18.18-0ubuntu2 | bind9-dnsutils 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9-dnsutils · Ubuntu 25.04 (plucky) | 1:9.18.18-0ubuntu2 | bind9-dnsutils 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9-host · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.12-0ubuntu0.22.04.3 | bind9-host 1:9.18.12-0ubuntu0.22.04.3 | Sep 19, 2023 |
| bind9-host · Ubuntu 24.04.5 LTS (noble) | 1:9.18.18-0ubuntu2 | bind9-host 1:9.18.18-0ubuntu2 | Sep 19, 2023 |
| bind9-host · Ubuntu 24.10 (oracular) | 1:9.18.18-0ubuntu2 | bind9-host 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9-host · Ubuntu 25.04 (plucky) | 1:9.18.18-0ubuntu2 | bind9-host 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9-libs · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.12-0ubuntu0.22.04.3 | bind9-libs 1:9.18.12-0ubuntu0.22.04.3 | Sep 19, 2023 |
| bind9-libs · Ubuntu 24.04.5 LTS (noble) | 1:9.18.18-0ubuntu2 | bind9-libs 1:9.18.18-0ubuntu2 | Sep 19, 2023 |
| bind9-libs · Ubuntu 24.10 (oracular) | 1:9.18.18-0ubuntu2 | bind9-libs 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9-libs · Ubuntu 25.04 (plucky) | 1:9.18.18-0ubuntu2 | bind9-libs 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9-utils · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.12-0ubuntu0.22.04.3 | bind9-utils 1:9.18.12-0ubuntu0.22.04.3 | Sep 19, 2023 |
| bind9-utils · Ubuntu 24.04.5 LTS (noble) | 1:9.18.18-0ubuntu2 | bind9-utils 1:9.18.18-0ubuntu2 | Sep 19, 2023 |
| bind9-utils · Ubuntu 24.10 (oracular) | 1:9.18.18-0ubuntu2 | bind9-utils 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9-utils · Ubuntu 25.04 (plucky) | 1:9.18.18-0ubuntu2 | bind9-utils 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9utils · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.12-0ubuntu0.22.04.3 | bind9utils 1:9.18.12-0ubuntu0.22.04.3 | Sep 19, 2023 |
| bind9utils · Ubuntu 24.04.5 LTS (noble) | 1:9.18.18-0ubuntu2 | bind9utils 1:9.18.18-0ubuntu2 | Sep 19, 2023 |
| bind9utils · Ubuntu 24.10 (oracular) | 1:9.18.18-0ubuntu2 | bind9utils 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| bind9utils · Ubuntu 25.04 (plucky) | 1:9.18.18-0ubuntu2 | bind9utils 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| dnsutils · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.12-0ubuntu0.22.04.3 | dnsutils 1:9.18.12-0ubuntu0.22.04.3 | Sep 19, 2023 |
| dnsutils · Ubuntu 24.04.5 LTS (noble) | 1:9.18.18-0ubuntu2 | dnsutils 1:9.18.18-0ubuntu2 | Sep 19, 2023 |
| dnsutils · Ubuntu 24.10 (oracular) | 1:9.18.18-0ubuntu2 | dnsutils 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
| dnsutils · Ubuntu 25.04 (plucky) | 1:9.18.18-0ubuntu2 | dnsutils 1:9.18.18-0ubuntu2 | Sep 20, 2023 |
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