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.

• CWE-787

• http://www.openwall.com/lists/oss-security/2023/06/21/6Mailing List, Patch, Third Party Advisory
• https://kb.isc.org/docs/cve-2023-2911Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/Mailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20230703-0010/Third Party Advisory
• https://www.debian.org/security/2023/dsa-5439Third Party Advisory
• http://www.openwall.com/lists/oss-security/2023/06/21/6Mailing List, Patch, Third Party Advisory
• https://kb.isc.org/docs/cve-2023-2911Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/Mailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20230703-0010/Third Party Advisory
• https://www.debian.org/security/2023/dsa-5439Third Party Advisory

Published

Jun 21, 2023

Last Modified

Jun 17, 2026

Status

Modified

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