-------------------------------------------------------------------------
Debian LTS Advisory DLA-3736-1                debian-lts@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/source-package/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

Debian LTS: DLA-3736-1: unbound security update

February 21, 2024
Two vulnerabilities were discovered in unbound, a validating, recursive, caching DNS resolver

Summary


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/source-package/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


Severity
Package : unbound
Version : 1.9.0-2+deb10u4
CVE ID : CVE-2023-50387 CVE-2023-50868
Debian Bug : 1063845

Related News

19.Laptop Bed Esm H320
2 - 3 min read
The release of Google Chrome 124 addresses four vulnerabilities, including a critical security flaw that can enable attackers to execute arbitrary
23.Tablet Connections Esm H320
2 - 3 min read
The release of Ubuntu 24.04 LTS , also known as Noble Numbat, brings various security enhancements and exciting new features . These improvements
4.Lock AbstractDigital Esm H320
2 - 3 min read
Tails 6.2 is a new Linux distribution release that expands its multilingual support and improves security features. The distribution is a
19.Laptop Bed Esm H320
2 - 3 min read
AlmaLinux 9.4 beta has been released and provides compelling reasons to consider it for desktop usage. While AlmaLinux is primarily known as a
32.Lock Code Circular Esm H320
2 - 3 min read
Linux admins and security practitioners face significant challenges in keeping their Linux systems secure amidst the constant threat of kernel bugs.
1.Penguin Landscape Esm H320
2 - 3 min read
A significant security threat, known as the Spectre v2 exploit, has been observed targeting Linux systems running on modern Intel processors. Let's
10.FingerPrint Locks Esm H320
2 - 3 min read
The recent release of I2P 2.5.0 , an anonymous P2P network that protects against online censorship, surveillance, and monitoring, has brought a slew
24.Key Code Esm H320
2 - 3 min read
The Akira ransomware group has extorted approximately $42 million from over 250 victims since January 1, 2024. The group initially focused on
Sign Up

Get the Latest News & Insights

Sign up to get the latest security news affecting Linux and open source delivered straight to your inbox.

© 2024 Guardian Digital, Inc All Rights Reserved