------------------------------------------------------------------------- Debian LTS Advisory DLA-3952-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Daniel Leidert November 14, 2024 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : unbound Version : 1.13.1-1+deb11u4 CVE ID : CVE-2024-8508 Debian Bug : 1083282 A vulnerability has been discovered in unbound, a validating, recursive, caching DNS resolver. Malicious upstreams responses with very large RRsets can cause Unbound to spend a considerable time applying name compression to downstream replies. This can lead to degraded performance and eventually denial of service in well orchestrated attacks. The vulnerability can be exploited by a malicious actor querying Unbound for the specially crafted contents of a malicious zone with very large RRsets. For Debian 11 bullseye, this problem has been fixed in version 1.13.1-1+deb11u4. We recommend that you upgrade your unbound packages. For the detailed security status of unbound please refer to its security tracker page at: https://security-tracker.debian.org/tracker/unbound Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS
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