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A vulnerability 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.
Mats Palmgren fixed an error in file pngrutil.c in which the trans array might be not allocated because of images with a bad tRNS chunk CRC value.
A remote attacker could craft an image that when processed or viewed by an application using libpng causes the application to terminate abnormally.
There is no known workaround at this time.
Please note that due to separate bugs in libpng 1.2.17, Gentoo does not provide libpng-1.2.17 but libpng-1.2.18. All libpng users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.2.18"
[ 1 ] CVE-2007-2445
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
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 email@example.com or alternatively, you may file a bug at http://bugs.gentoo.org.
Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
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