Vulnerability Assessment & Network Security Forums
If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
libpng: Buffer overflow on row buffers
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200407-06
(libpng: Buffer overflow on row buffers)
Due to a wrong calculation of loop offset values, libpng contains a buffer
overflow vulnerability on the row buffers. This vulnerability was initially
patched in January 2003 but since it has been discovered that libpng
contains the same vulnerability in two other places.
A possible hacker could exploit this vulnerability to cause programs linked
against the library to crash or execute arbitrary code with the permissions
of the user running the vulnerable program, which could be the root user.
There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version.
All libpng users should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=media-libs/libpng-1.2.5-r7"
# emerge ">=media-libs/libpng-1.2.5-r7"
You should also run revdep-rebuild to rebuild any packages that depend on
older versions of libpng :
Network Security Threat Level: Medium
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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