| Description: | Summary:
The remote host is missing an update for the 'libpng' package(s) announced via the USN-730-1 advisory.
Vulnerability Insight:
It was discovered that libpng did not properly perform bounds checking in
certain operations. An attacker could send a specially crafted PNG image and
cause a denial of service in applications linked against libpng. This issue
only affected Ubuntu 8.04 LTS. (CVE-2007-5268, CVE-2007-5269)
Tavis Ormandy discovered that libpng did not properly initialize memory. If a
user or automated system were tricked into opening a crafted PNG image, an
attacker could cause a denial of service via application crash, or possibly
execute arbitrary code with the privileges of the user invoking the program.
This issue did not affect Ubuntu 8.10. (CVE-2008-1382)
Harald van Dijk discovered an off-by-one error in libpng. An attacker could
could cause an application crash in programs using pngtest. (CVE-2008-3964)
It was discovered that libpng did not properly NULL terminate a keyword
string. An attacker could exploit this to set arbitrary memory locations to
zero. (CVE-2008-5907)
Glenn Randers-Pehrson discovered that libpng did not properly initialize
pointers. If a user or automated system were tricked into opening a crafted PNG
file, an attacker could cause a denial of service or possibly execute arbitrary
code with the privileges of the user invoking the program. (CVE-2009-0040)
Affected Software/OS:
'libpng' package(s) on Ubuntu 6.06, Ubuntu 7.10, Ubuntu 8.04, Ubuntu 8.10.
Solution:
Please install the updated package(s).
CVSS Score:
7.5
CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P
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