Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can be configured using the `max-cache-size` statement in the configuration file; it defaults to 90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets from the cache, to keep memory use below the configured limit. It has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size` limit to be significantly exceeded. This issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0 through 9.18.15, 9.19.0 through 9.19.13, 9.11.3-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- http://www.openwall.com/lists/oss-security/2023/06/21/6 Mailing List, Patch, Third Party Advisory
- https://kb.isc.org/docs/cve-2023-2828 Vendor Advisory
- http://www.openwall.com/lists/oss-security/2023/06/21/6 Mailing List, Patch, Third Party Advisory
- https://kb.isc.org/docs/cve-2023-2828 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · isc, debian, fedoraprojectNVD modified 2026-10-24 19:10
Affected (CPE criteria) 13
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*cpe:2.3:a:isc:bind:*:*:*:*:supported_preview:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
References 14
- http://www.openwall.com/lists/oss-security/2023/06/21/6 Mailing List, Patch, Third Party Advisory
- https://kb.isc.org/docs/cve-2023-2828 Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/07/msg00021.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]/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-5439 Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/06/21/6 Mailing List, Patch, Third Party Advisory
- https://kb.isc.org/docs/cve-2023-2828 Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/07/msg00021.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]/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-5439 Third Party Advisory