Updated: 2025-12-14 02:33:11.21467
Description:
The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory, causing `named` to terminate unexpectedly. Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel's configured TCP port is necessary. This issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | NONE | 0.0 |
| CVSS Version 3.x | HIGH | 7.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | bind | 9.16.23 | 7.5 | HIGH | Already Fixed | 2023-11-08 08:36:05 | ||
| CentOS 6 ELS | bind | 9.8.2 | 7.5 | HIGH | Released | CLSA-2023:1697136232 | 2023-10-30 09:35:21 | |
| CentOS 7 ELS | bind | 9.11.4 | 7.5 | HIGH | Released | CLSA-2023:1697135138 | 2023-10-12 17:07:56 | |
| CentOS 8.4 ELS | bind | 9.11.26 | 7.5 | HIGH | Released | CLSA-2023:1697134824 | 2023-10-12 17:07:53 | |
| CentOS 8.5 ELS | bind | 9.11.26 | 7.5 | HIGH | Released | CLSA-2023:1697134618 | 2023-10-12 17:07:54 | |
| CloudLinux 6 ELS | bind | 9.8.2 | 7.5 | HIGH | Released | CLSA-2023:1697135837 | 2023-10-30 09:35:24 | |
| Debian 10 ELS | bind9 | 9.11.5 | 7.5 | HIGH | Already Fixed | 2025-10-21 18:58:38 | ||
| Oracle Linux 6 ELS | bind | 9.8.2 | 7.5 | HIGH | Released | CLSA-2023:1697135570 | 2023-10-12 17:07:57 | |
| Oracle Linux 7 ELS | bind | 9.11.4 | 7.5 | HIGH | Already Fixed | 2026-01-20 01:23:24 | ||
| Ubuntu 16.04 ELS | bind9 | 9.10.3 | 7.5 | HIGH | Released | CLSA-2023:1697134400 | 2023-10-12 17:07:59 |