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Gentoo Linux Security Advisory 202208-13

Gentoo Linux Security Advisory 202208-13
Posted Aug 10, 2022
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202208-13 - A vulnerability in libass could result in denial of service. Versions less than 0.15.1 are affected.

tags | advisory, denial of service
systems | linux, gentoo
advisories | CVE-2020-36430
SHA-256 | 1388af97b30cdbb2b63a31b0850f5ea0e3695f0a9efdf5d86a0736c6e799ea54

Gentoo Linux Security Advisory 202208-13

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 202208-13
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https://security.gentoo.org/
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Severity: Low
Title: libass: Denial of service
Date: August 10, 2022
Bugs: #803119
ID: 202208-13

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Synopsis
=======
A vulnerability in libass could result in denial of service.

Background
=========
libass is a portable subtitle renderer for the ASS/SSA (Advanced
Substation Alpha/Substation Alpha) subtitle format.

Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/libass < 0.15.1 >= 0.15.1

Description
==========
A one-byte buffer overwrite in ASS font decoding could trigger an
assertion failure resulting in denial of service.

Impact
=====
An attacker with control over the ASS track input to libass via an application using it could trigger a denial of service.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All libass users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libass-0.15.1"

References
=========
[ 1 ] CVE-2020-36430
https://nvd.nist.gov/vuln/detail/CVE-2020-36430

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202208-13

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
======
Copyright 2022 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5
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