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Trustix Secure Linux Security Advisory #2004-0040
Package name: libpng
Summary: Several security holes
Date: 2004-08-05
Affected versions: Trustix Secure Linux 2.0
Trustix Secure Linux 2.1
Trustix Operating System - Enterprise Server 2
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Package description:
libpng is a library of functions for creating and manipulating PNG
(Portable Network Graphics) image format files.
Problem description:
This update fixed the following security vulnerabilities:
CAN-2004-0597 - Multiple buffer overflows exist, including when
handling transparency chunk data, which could be exploited to cause
arbitrary code to be executed when a specially crafted PNG image is
processed
CAN-2004-0598 - Multiple NULL pointer dereferences in
png_handle_iCPP() and elsewhere could be exploited to cause an
application to crash when a specially crafted PNG image is processed
CAN-2004-0599 - Multiple integer overflows in png_handle_sPLT(),
png_read_png() nctions and elsewhere could be exploited to cause an
application to crash, or potentially arbitrary code to be executed,
when a specially crafted PNG image is processed
CAN-2004-0768 - A buffer overflow could be caused by incorrect
calculation of buffer offsets, possibly leading to the execution of
arbitrary code
Some of these problems was also fixed in our earier releases, this
update includes an all in one patch that covers them all.
Action:
We recommend that all systems with this package installed be upgraded.
Please note that if you do not need the functionality provided by this
package, you may want to remove it from your system.
Location:
All Trustix Secure Linux updates are available from
About Trustix Secure Linux:
Trustix Secure Linux is a small Linux distribution for servers. With focus
on security and stability, the system is painlessly kept safe and up to
date from day one using swup, the automated software updater.
Automatic updates:
Users of the SWUP tool can enjoy having updates automatically
installed using 'swup --upgrade'.
Public testing:
Most updates for Trustix Secure Linux are made available for public
testing some time before release.
If you want to contribute by testing the various packages in the
testing tree, please feel free to share your findings on the
tsl-discuss mailinglist.
The testing tree is located at
You may also use swup for public testing of updates:
site {
class = 0
location = "http://tsldev.trustix.org/horizon/rdfs/latest.rdf"
regexp = ".*"
}
Questions?
Check out our mailing lists:
Verification:
This advisory along with all Trustix packages are signed with the
TSL sign key.
This key is available from:
The advisory itself is available from the errata pages at
and
or directly at
MD5sums of the packages:
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2a916c1321aa5ff7fc380a41d1e69baa 2.0/rpms/libpng12-1.2.5-7tr.i586.rpm
dd28a857f30742276d5f5bb7ecdcdcb4 2.0/rpms/libpng12-devel-1.2.5-7tr.i586.rpm
7eeb7a4c22eb2007875c15e8e8024532 2.1/rpms/libpng-1.2.5-12tr.i586.rpm
2e6f72b81df71febbac21e361c26b913 2.1/rpms/libpng-devel-1.2.5-12tr.i586.rpm
87e50d10fd56dde63f645dd1a40d9f95 2.1/rpms/libpng-tools-1.2.5-12tr.i586.rpm
bc659bbb35dd41574729215f49eed2bc e2/libpng-1.2.5-12tr.i586.rpm
2b0b50f466ef4171ecf9e8e591aa174f e2/libpng-devel-1.2.5-12tr.i586.rpm
b03755eb3a750f8a4b333b312514061e e2/libpng-tools-1.2.5-12tr.i586.rpm
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Trustix Security Team
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