A: LittleCMS security update has been released for Gentoo Linux.

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Gentoo Linux Security Advisory GLSA 202105-18
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  https://security.gentoo.org/
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Severity: Normal
Title: LittleCMS: User-assisted execution of arbitrary code
Date: May 26, 2021
Bugs: #761418
ID: 202105-18

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Synopsis
========

A heap-based buffer overflow in LittleCMS might allow remote attackers
to execute arbitrary code.

Background
==========

LittleCMS, or short lcms, is a color management system for working with
ICC profiles. It is used by many applications including GIMP, Firefox
and Chromium.

Affected packages
=================

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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/lcms < 2.10 >= 2.10

Description
===========

It was discovered that LittleCMS (aka Little Color Management System)
had an integer overflow in the AllocateDataSet function in cmscgats.c.

Impact
======

A remote attacker could entice a user or automated system to open a
specially crafted file containing malicious color data, 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 LittleCMS users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/lcms-2.10"

References
==========

[ 1 ] CVE-2018-16435
  https://nvd.nist.gov/vuln/detail/CVE-2018-16435

Availability
============

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

  https://security.gentoo.org/glsa/202105-18

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 2021 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