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Debian 10 Buster DLA-3139-1 Critical: Knot-Resolver Denial Of Service

debian lts
Calendar Grey October 7, 2022
Dist Debian Esm H88
An updated security patch for knot-resolver fortifies DNSSEC against remote denial-of-service threats in Debian LTS.
It was discovered that there was a potential remote denial-of-service vulnerability in the knot-resolver DNSSEC-validating DNS resolver
Topics%20covered

Topics Covered

security advisory denial of service critical Debian remote attack knot-resolver DLA advisory

Summary

Remote attackers could have caused a denial of service via CPU
consumption by exploiting algorithmic complexity: during an attack,
an authoritative server would return large nameserver or address
sets.

For Debian 10 buster, this problem has been fixed in version
3.2.1-3+deb10u1.

We recommend that you upgrade your knot-resolver packages.

For the detailed security status of knot-resolver please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/knot-resolver

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



Severity
critical
Lowest
Low
Medium
High
Critical

Package: knot-resolver
Version: 3.2.1-3+deb10u1
CVE ID: CVE-2022-40188

Topics%20covered

Topics Covered

security advisory denial of service critical Debian remote attack knot-resolver DLA advisory

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