Buffer overflow in Isc Bind
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.025 (83.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
Weakness classification (CWE)
References
- kb.isc.org/docs/cve-2023-2911 (vendor-advisory, Vendor Advisory)
- www.openwall.com/lists/oss-security/2023/06/21/6 (Patch, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List, Third Party Advisory)
- www.debian.org/security/2023/dsa-5439 (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20230703-0010/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-2911?
- CVE-2023-2911 is a high-severity vulnerability in Isc Bind, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2023-06-21.
- How severe is CVE-2023-2911?
- High severity. CVSS v3 base score is 7.5 out of 10.