A `named` instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache (RFC 8198) option (`synth-from-dnssec`) enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9 versions 9.16.8-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 2
- https://kb.isc.org/docs/cve-2023-2829 Vendor Advisory
- https://kb.isc.org/docs/cve-2023-2829 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, netappNVD modified 2026-10-24 19:10
Affected (CPE criteria) 7
cpe:2.3:a:isc:bind:*:*:*:*:supported_preview:*:*:*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 4
- https://kb.isc.org/docs/cve-2023-2829 Vendor Advisory
- https://security.netapp.com/advisory/ntap-20230703-0010/ Third Party Advisory
- https://kb.isc.org/docs/cve-2023-2829 Vendor Advisory
- https://security.netapp.com/advisory/ntap-20230703-0010/ Third Party Advisory