DSA-3399-1 libpng -- security update

Related Vulnerabilities: CVE-2015-7981   CVE-2015-8126  

Several vulnerabilities have been discovered in the libpng PNG library. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2015-7981 Qixue Xiao discovered an out-of-bounds read vulnerability in the png_convert_to_rfc1123 function. A remote attacker can potentially take advantage of this flaw to cause disclosure of information from process memory. CVE-2015-8126 Multiple buffer overflows were discovered in the png_set_PLTE and png_get_PLTE functions. A remote attacker can take advantage of this flaw to cause a denial of service (application crash) via a small bit-depth value in an IHDR (image header) chunk in a PNG image. For the oldstable distribution (wheezy), these problems have been fixed in version 1.2.49-1+deb7u1. For the stable distribution (jessie), these problems have been fixed in version 1.2.50-2+deb8u1. For the unstable distribution (sid), these problems have been fixed in version 1.2.54-1. We recommend that you upgrade your libpng packages.

Debian Security Advisory

DSA-3399-1 libpng -- security update

Date Reported:
18 Nov 2015
Affected Packages:
libpng
Vulnerable:
Yes
Security database references:
In the Debian bugtracking system: Bug 803078, Bug 805113.
In Mitre's CVE dictionary: CVE-2015-7981, CVE-2015-8126.
More information:

Several vulnerabilities have been discovered in the libpng PNG library. The Common Vulnerabilities and Exposures project identifies the following problems:

  • CVE-2015-7981

    Qixue Xiao discovered an out-of-bounds read vulnerability in the png_convert_to_rfc1123 function. A remote attacker can potentially take advantage of this flaw to cause disclosure of information from process memory.

  • CVE-2015-8126

    Multiple buffer overflows were discovered in the png_set_PLTE and png_get_PLTE functions. A remote attacker can take advantage of this flaw to cause a denial of service (application crash) via a small bit-depth value in an IHDR (image header) chunk in a PNG image.

For the oldstable distribution (wheezy), these problems have been fixed in version 1.2.49-1+deb7u1.

For the stable distribution (jessie), these problems have been fixed in version 1.2.50-2+deb8u1.

For the unstable distribution (sid), these problems have been fixed in version 1.2.54-1.

We recommend that you upgrade your libpng packages.