Memory Leak Affecting bind9 package, versions <1:9.17.20-1

Note: Versions mentioned in the description apply only to the upstream bind9 package and not the bind9 package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

• https://security-tracker.debian.org/tracker/CVE-2022-38177
• http://www.openwall.com/lists/oss-security/2022/09/21/3
• https://kb.isc.org/docs/cve-2022-38177
• https://lists.debian.org/debian-lts-announce/2022/10/msg00007.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CV4GQWBPF7Y52J2FA24U6UMHQAOXZEF7/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MRHB6J4Z7BKH4HPEKG5D35QGRD6ANNMT/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZJQNUASODNVAWZV6STKG5SD6XIJ446S/
• https://security.gentoo.org/glsa/202210-25
• https://security.netapp.com/advisory/ntap-20221228-0010/
• https://www.debian.org/security/2022/dsa-5235
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CV4GQWBPF7Y52J2FA24U6UMHQAOXZEF7/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MRHB6J4Z7BKH4HPEKG5D35QGRD6ANNMT/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZJQNUASODNVAWZV6STKG5SD6XIJ446S/