GLSA-200711-08 : libpng: Multiple Denials of Service
Medium Nessus Plugin ID 27825
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200711-08 (libpng: Multiple Denials of Service)
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.
SolutionAll libpng users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=media-libs/libpng-1.2.21-r3'