Affected: ISC BIND9, isc bind

By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.

Affected: Ubuntu:18.04:LTS: bind9, Ubuntu:20.04:LTS: bind9, Ubuntu:22.04:LTS: bind9

Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind incorrectly handled large delegations. A remote attacker could possibly use this issue to reduce performance, leading to a denial of service. (CVE-2022-2795)

It was discovered that Bind incorrectly handled statistics requests. A remote attacker could possibly use this issue to obtain sensitive memory contents, or cause a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-2881)

It was discovered that Bind incorrectly handled memory when processing certain Diffie-Hellman key exchanges. A remote attacker could use this issue to consume resources, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-2906)

Maksym Odinintsev discovered that Bind incorrectly handled answers from cache when configured with a zero stale-answer-timeout. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-3080)

It was discovered that Bind incorrectly handled memory when processing ECDSA DNSSEC verification. A remote attacker could use this issue to consume resources, leading to a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2022-38177)

It was discovered that Bind incorrectly handled memory when processing EDDSA DNSSEC verification. A remote attacker could use this issue to consume resources, leading to a denial of service. (CVE…