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
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
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 Wed May 28, 2014 4:25 am; edited 4 times in total