Uočena su i otklonjena dva sigurnosna nedostatka u radu programskog paketa gif2png. Udaljeni ih napadač može iskoristiti za DoS napad, pokretanje proizvoljnog programskog koda ili stvaranje PNG datoteka u direktorijima koji nisu za to namijenjeni.
Prvi se nedostatak očituje u prepisivanju spremnika u datoteci "gif2png.c", a drugi je posljedica neodgovarajuće zakrpe za propust oznake CVE-2009-5018.
Posljedica:
Napadačima spomenuti nedostaci omogućuju provođenje DoS napada, izvršavanje zlonamjernog programskog koda ili stvaranje PNG datoteka u neodgovarajućim direktorijima.
Rješenje:
Korisnicima se savjetuje instalacija novih programskih rješenja.
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Gentoo Linux Security Advisory GLSA 201203-15
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http://security.gentoo.org/
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Severity: Normal
Title: gif2png: Multiple vulnerabilities
Date: March 16, 2012
Bugs: #351698
ID: 201203-15
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Synopsis
========
Multiple vulnerabilities have been found in gif2png, the worst of which
might allow execution of arbitrary code.
Background
==========
gif2png converts images from GIF format to PNG format.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-gfx/gif2png < 2.5.8 >= 2.5.8
Description
===========
Two vulnerabilities have been found in gif2png:
* A boundary error in gif2png.c could cause a buffer overflow
(CVE-2010-4694).
* The patch for CVE-2009-5018 causes gif2png to truncate GIF pathnames
(CVE-2010-4695).
Impact
======
A remote attacker could entice a user to open a specially crafted GIF
file, possibly resulting in execution of arbitrary code, a Denial of
Service condition, or the creation of PNG files in unintended
directories.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All gif2png users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/gif2png-2.5.8"
References
==========
[ 1 ] CVE-2010-4694
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-4694
[ 2 ] CVE-2010-4695
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-4695
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201203-15.xml
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
Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite. or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2012 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.
http://creativecommons.org/licenses/by-sa/2.5
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