Joined: 12 May 2004
|Posted: Wed Nov 07, 2007 10:26 pm Post subject: [ GLSA 200711-08 ] libpng: Multiple Denials of Service
|Gentoo Linux Security Advisory
Title: libpng: Multiple Denials of Service (GLSA 200711-08)
Date: November 07, 2007
Several vulnerabilities in libpng may allow a remote attacker to crash applications that handle untrusted images.
libpng is a free ANSI C library used to process and manipulate PNG images.
Vulnerable: < 1.2.21-r3
Unaffected: >= 1.2.21-r3
Architectures: All supported architectures
An off-by-one error when handling ICC profile chunks in the png_set_iCCP() function was discovered (CVE-2007-5266). George Cook and Jeff Phillips reported several errors in pngrtran.c, the use of logical instead of a bitwise functions and incorrect comparisons (CVE-2007-5268). Tavis Ormandy reported out-of-bounds read errors in several PNG chunk handling functions (CVE-2007-5269).
A remote attacker could craft an image that when processed or viewed by an application using libpng would cause the application to terminate abnormally.
There is no known workaround at this time.
All libpng users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.2.21-r3"
Last edited by GLSA on Fri Oct 17, 2008 4:20 am; edited 2 times in total