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Debian 10: DLA-3816-1 Critical: Bind9 Denial Of Service Issues

debian lts
Calendar Grey May 17, 2024
Dist Debian Esm H88
Debian LTS has released advisory DLA-3816-1 in light of vulnerabilities found in bind9, urging users to promptly apply crucial updates for improved security
Two vulnerabilities were discovered in BIND, a DNS server implementation, which may result in denial of service
Topics%20covered

Topics Covered

security advisory denial of service security issue update Debian DNS bind9

Summary

CVE-2023-50387

Certain DNSSEC aspects of the DNS protocol allow remote attackers to cause
a denial of service via DNSSEC queries. This is known as the "KeyTrap"
issue.

CVE-2023-50868

The Closest Encloser Proof aspect of the DNS protocol allows remote
attackers to cause a denial of service via DNSSEC queries in a random
subdomain attack. This is known as the "NSEC3" issue.

For Debian 10 buster, these problems have been fixed in version
1:9.11.5.P4+dfsg-5.1+deb10u11.

We recommend that you upgrade your bind9 packages.

For the detailed security status of bind9 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/bind9

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: bind9
Version: 1:9.11.5.P4+dfsg-5.1+deb10u11
CVE ID: CVE-2023-50387 CVE-2023-50868
Debian Bug:

Topics%20covered

Topics Covered

security advisory denial of service security issue update Debian DNS bind9

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