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Gentoo Linux Security Advisory 202008-05

Gentoo Linux Security Advisory 202008-05
Posted Aug 10, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202008-5 - A buffer overflow in gThumb might allow remote attacker(s) to execute arbitrary code. Versions less than 3.10.0 are affected.

tags | advisory, remote, overflow, arbitrary
systems | linux, gentoo
advisories | CVE-2019-20326
SHA-256 | baf9b9fdfc087d792c18f2abcd45820dff1ca1265219556ebee7f53eedfc61d3

Gentoo Linux Security Advisory 202008-05

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 202008-05
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https://security.gentoo.org/
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Severity: Normal
Title: gThumb: Arbitrary code execution
Date: August 08, 2020
Bugs: #712932
ID: 202008-05

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Synopsis
=======
A buffer overflow in gThumb might allow remote attacker(s) to execute
arbitrary code.

Background
=========
gThumb is an image viewer and browser for GNOME.

Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-gfx/gthumb < 3.10.0 >= 3.10.0

Description
==========
A heap-based buffer overflow in gThumb's
_cairo_image_surface_create_from_jpeg() function, located in
extensions/cairo_io/cairo-image-surface-jpeg.c was discovered.

Impact
=====
A remote attacker could entice a user to open a specially crafted image
file using gThumb, 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 gThumb users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/gthumb-3.10.0"

References
=========
[ 1 ] CVE-2019-20326
https://nvd.nist.gov/vuln/detail/CVE-2019-20326

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

https://security.gentoo.org/glsa/202008-05

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
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