Debian dla-4769 : libass-dev - security update

critical Nessus Plugin ID 342477

Synopsis

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

Description

The remote Debian 12 host has packages installed that are affected by a vulnerability as referenced in the dla-4769 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4769-1 [email protected] https://www.debian.org/lts/security/ Daniel Leidert September 02, 2026 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : libass Version : 1:0.17.1-1+deb12u1 CVE ID : CVE-2026-61627

A vulnerability has been found in libass, a library for SSA/ASS subtitles rendering.

CVE-2026-61627

An an out-of-bounds read and write exist that could potentially lead to a DoS.

For Debian 12 bookworm, this problem has been fixed in version 1:0.17.1-1+deb12u1.

We recommend that you upgrade your libass packages.

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

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 libass-dev packages.

Plugin Details

Severity: Critical

ID: 342477

File Name: debian_DLA-4769.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 9/3/2026

Updated: 9/3/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.45

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-61627

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:12.0, p-cpe:/a:debian:debian_linux:libass-dev, p-cpe:/a:debian:debian_linux:libass9

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/2/2026

Vulnerability Publication Date: 9/2/2026

Reference Information

CVE: CVE-2026-61627

Detections

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