Home / mailings [gentoo-announce] [ GLSA 202208-13 ] libass: Denial of service
Posted on 10 August 2022
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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
=================
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Package / Vulnerable / Unaffected
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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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