bind-9.16.23-1.el9.1

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

Security Fix(es):

* bind: BIND 9 resolvers configured to answer from cache with zero stale-answer-timeout may terminate unexpectedly (CVE-2022-3080)
* bind: memory leak in ECDSA DNSSEC verification code (CVE-2022-38177)
* bind: memory leaks in EdDSA DNSSEC verification code (CVE-2022-38178)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

CVE-2022-3080
By sending specific queries to the resolver, an attacker can cause named to crash.
CVE-2022-38177
By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.
CVE-2022-38178
By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.