Debian: DSA-5235-1 Urgent: Bind9 DoS Security Flaws Affecting Systems

CVE-2022-2795

Yehuda Afek, Anat Bremler-Barr and Shani Stajnrod discovered that a
flaw in the resolver code can cause named to spend excessive amounts
of time on processing large delegations, significantly degrade
resolver performance and result in denial of service.

CVE-2022-3080

Maksym Odinintsev discovered that the resolver can crash when stale
cache and stale answers are enabled with a zero
stale-answer-timeout. A remote attacker can take advantage of this
flaw to cause a denial of service (daemon crash) via specially
crafted queries to the resolver.

CVE-2022-38177

It was discovered that the DNSSEC verification code for the ECDSA
algorithm is susceptible to a memory leak flaw. A remote attacker
can take advantage of this flaw to cause BIND to consume resources,
resulting in a denial of service.

CVE-2022-38178

It was discovered that the DNSSEC verification code for the EdDSA
algorithm is susceptible to a memory leak flaw. A remote attacker
...