CVE-2023-2911
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.
- Score
- CVSS 3.1 7.5 High
- Status
- Modified - security-officer@isc.org
- Published
- 2023-06-21
- Last modified
- 2026-10-24
- Weaknesses
- CWE-787
Affected products
- Debian Linux (Debian)
- Fedora (Fedoraproject)
- Bind (Isc)
- Bind 9 (Isc)
- Active Iq Unified Manager (Netapp)
- H300s Firmware (Netapp)
- H410c Firmware (Netapp)
- H410s Firmware (Netapp)
- H500s Firmware (Netapp)
- H700s Firmware (Netapp)
References
- https://kb.isc.org/docs/cve-2023-2911
- http://www.openwall.com/lists/oss-security/2023/06/21/6
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3K6AJK7RRSR53HRF5GGKPA6…
- https://www.debian.org/security/2023/dsa-5439
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEFCEVCTYEMKTWA7V7EYPI5Y…
- https://security.netapp.com/advisory/ntap-20230703-0010/
