– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Gentoo Linux Security Advisory GLSA 202012-12
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
https://security.gentoo.org/
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Severity: Normal
Title: libass: User-assisted execution of arbitrary code
Date: December 23, 2020
Bugs: #746413
ID: 202012-12
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Synopsis
========
A vulnerability has been found in libass that could allow a remote
attacker to execute arbitrary code.
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 < 0.15.0 >= 0.15.0
Description
===========
It was discovered that libass did not properly handle Advanced
Substation Alpha/Substation Alpha subtitle format files.
Impact
======
A remote attacker could entice a user to process an a specially crafted
subtitle format file using an application linked against libass,
possibly resulting in execution of arbitrary code with the privileges
of the process or a Denial of Service condition.
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-0.15.0”
References
==========
[ 1 ] CVE-2020-26682
https://nvd.nist.gov/vuln/detail/CVE-2020-26682
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202012-12
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 2020 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
—–BEGIN PGP SIGNATURE—–
wsB5BAABCAAjFiEEExKRzo+LDXJgXHuURObr3Jv2BVkFAl/jo1MFAwAAAAAACgkQRObr3Jv2BVld
awgAp6x/8sVWKiTZMidEVI3r/LdPCbRGdOoy94XxAOUkwyWFlx77+rT9T7y4gOe2zkMkGBCAwacK
KezoBrvfsOZLwnHEiFsYlLFEDYukOZFuDAzBFURq/Xuq+hgyIZuHiZWWNE1Jlb6jmpHs5ODGhspA
THGotMra2s6DKc4KmhiLSG9QH0fH75V2GnprPooetf5DTCPSkKegdaFg3KIDmWlL+LsvzEaoyfSy
cylCJ+o1lI33belhmszUjEcOeldqLPaf0Wtcu/6SA51Hs/uuNXtKczSuL8VoY7ITcgRgbzkJrrO1
UhAnW0DbhdtlYEl4LdlFbimO79ff3UblOdg5ttQDtg==
=NV4e
—–END PGP SIGNATURE—–
