If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries). This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HIsc Bind
APPIsc9.11.0 – 9.16.509.18.0 – 9.18.47 (bez)9.20.0 – 9.20.21 (bez)9.21.0 – 9.21.20 (bez)
Related vulnerabilities
Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Inte...
Undefined behavior may result due to a race condition leading to a use-after-free violation. If BIND receives...
BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessi...
A use-after-free vulnerability exists within the DNS-over-HTTPS implementation. This issue affects BIND 9 vers...
A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domai...