[ GLSA 201010-01 ] Libpng: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: Libpng: Multiple vulnerabilities (GLSA 201010-01)
Severity: normal
Exploitable: remote
Date: October 05, 2010
Updated: June 02, 2014
Bug(s): #307637, #324153, #335887
ID: 201010-01

Synopsis

Multiple vulnerabilities in libpng might lead to privilege
escalation or a Denial of Service.


Background

libpng is a standard library used to process PNG (Portable Network
Graphics) images. It is used by several programs, including web browsers
and potentially server processes.


Affected Packages

Package: media-libs/libpng
Vulnerable: < 1.4.3
Unaffected: >= 1.4.3
Unaffected: >= 1.2.46 < 1.2.47
Unaffected: >= 1.2.47 < 1.2.48
Unaffected: >= 1.2.49 < 1.2.50
Unaffected: >= 1.2.50 < 1.2.51
Unaffected: >= 1.2.51 < 1.2.52
Architectures: All supported architectures


Description

Multiple vulnerabilities were found in libpng:

• The png_decompress_chunk() function in pngrutil.c does not properly
  handle certain type of compressed data (CVE-2010-0205)
  
• A buffer overflow in pngread.c when using progressive applications
  (CVE-2010-1205)
  
• A memory leak in pngrutil.c when dealing with a certain type of
  chunks (CVE-2010-2249)
  

Impact

An attacker could exploit these vulnerabilities to cause programs linked
against the library to crash or execute arbitrary code with the
permissions of the user running the vulnerable program, which could be
the root user.


Workaround

There is no known workaround at this time.

Resolution

All libpng 1.4 users should upgrade to the latest version: