RHSA-2015:2596: Moderate: libpng security update
The libpng packages contain a library of functions for creating andmanipulating PNG (Portable Network Graphics) image format files.It was discovered that the pnggetPLTE() and pngsetPLTE() functions oflibpng did not correctly calculate the maximum palette sizes for bit depthsof less than 8. In case an application tried to use these functions incombination with properly calculated palette sizes, this could lead to abuffer overflow or out-of-bounds reads. An attacker could exploit this tocause a crash or potentially execute arbitrary code by tricking anunsuspecting user into processing a specially crafted PNG image. However,the exact impact is dependent on the application using the library.(CVE-2015-8126, CVE-2015-8472)All libpng users are advised to upgrade to these updated packages, whichcontain a backported patch to correct this issue.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2015:2596?
The severity of RHSA-2015:2596 is classified as normal.
How do I fix RHSA-2015:2596?
To fix RHSA-2015:2596, update the libpng package to version 1.5.13-7.el7_2.
Which versions of libpng are affected by RHSA-2015:2596?
Versions of libpng prior to 1.5.13-7.el7_2 are affected by RHSA-2015:2596.
What functions are impacted by the RHSA-2015:2596 vulnerability?
The functions png_get_PLTE() and png_set_PLTE() are impacted by the RHSA-2015:2596 vulnerability.
Is there a specific architecture affected by RHSA-2015:2596?
Yes, RHSA-2015:2596 affects multiple architectures including x86_64 and ppc64le.