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Debian dla-3952 : libunbound-dev - security update

medium Nessus Plugin ID 211384

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-3952 advisory.

 ------------------------------------------------------------------------- Debian LTS Advisory DLA-3952-1 [email protected] https://www.debian.org/lts/security/ Daniel Leidert November 14, 2024 https://wiki.debian.org/LTS
 -------------------------------------------------------------------------

 Package : unbound Version : 1.13.1-1+deb11u4 CVE ID : CVE-2024-8508 Debian Bug : 1083282

 A vulnerability has been discovered in unbound, a validating, recursive, caching DNS resolver. Malicious upstreams responses with very large RRsets can cause Unbound to spend a considerable time applying name compression to downstream replies. This can lead to degraded performance and eventually denial of service in well orchestrated attacks. The vulnerability can be exploited by a malicious actor querying Unbound for the specially crafted contents of a malicious zone with very large RRsets.

 For Debian 11 bullseye, this problem has been fixed in version 1.13.1-1+deb11u4.

 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

 Attachment:
 signature.asc Description: This is a digitally signed message part

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libunbound-dev packages.

See Also

https://security-tracker.debian.org/tracker/source-package/unbound

https://packages.debian.org/source/bullseye/unbound

https://security-tracker.debian.org/tracker/CVE-2024-8508

Plugin Details

Severity: Medium

ID: 211384

File Name: debian_DLA-3952.nasl

Version: 1.1

Type: local

Agent: unix

Published: 11/14/2024

Updated: 11/14/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, continuous_assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2024-8508

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:libunbound-dev, p-cpe:/a:debian:debian_linux:unbound, p-cpe:/a:debian:debian_linux:unbound-anchor, p-cpe:/a:debian:debian_linux:unbound-host, p-cpe:/a:debian:debian_linux:libunbound8, p-cpe:/a:debian:debian_linux:python3-unbound

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 11/14/2024

Vulnerability Publication Date: 10/3/2024

Reference Information

CVE: CVE-2024-8508

IAVA: 2024-A-0682