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Gentoo Linux: GLSA-202012-12 Normal: libass Remote Code Execution Risk

gentoo
Calendar Grey December 23, 2020
Dist Gentoo Esm H88
Enhance libass to prevent potential code execution vulnerabilities and fortify Gentoo systems from external threats. Refer to the advisory for comprehensive insights.
A vulnerability has been found in libass that could allow a remote attacker to execute arbitrary code.

Summary

It was discovered that libass did not properly handle Advanced Substation Alpha/Substation Alpha subtitle format files.

Topics%20covered

Topics Covered

security advisory Gentoo gentoo remote code execution arbitrary code execution remote attack libass

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
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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.

Severity: Normal
Title: libass: User-assisted execution of arbitrary code
Date: December 23, 2020
Bugs: #746413
ID: 202012-12

Topics%20covered

Topics Covered

security advisory Gentoo gentoo remote code execution arbitrary code execution remote attack libass

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.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 media-libs/libass < 0.15.0 >= 0.15.0

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.

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