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Debian LTS Advisory DLA-3816-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Santiago Ruano Rincón
May 17, 2024 https://wiki.debian.org/LTS
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Package : bind9
Version : 1:9.11.5.P4+dfsg-5.1+deb10u11
CVE ID : CVE-2023-50387 CVE-2023-50868
Debian Bug :
Two vulnerabilities were discovered in BIND, a DNS server implementation, which
may result in denial of service.
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/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
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