------------------------------------------------------------------------- Debian LTS Advisory DLA-3736-1 debian-...@lists.debian.org https://www.debian.org/lts/security/ Markus Koschany February 21, 2024 https://wiki.debian.org/LTS -------------------------------------------------------------------------
Package : unbound Version : 1.9.0-2+deb10u4 CVE ID : CVE-2023-50387 CVE-2023-50868 Debian Bug : 1063845 Two vulnerabilities were discovered in unbound, a validating, recursive, caching DNS resolver. Specially crafted DNSSEC answers could lead unbound down a very CPU intensive and time costly DNSSEC (CVE-2023-50387) or NSEC3 hash (CVE-2023-50868) validation path, resulting in denial of service. For Debian 10 buster, these problems have been fixed in version 1.9.0-2+deb10u4. 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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