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Red Hat: RHSA-2015:2596-01 Moderate: Libpng Buffer Overflow

red hat
Calendar Grey December 9, 2015
Scroller Redhat
Security bulletin for Ubuntu: Moderate patch for libjpeg correcting memory access vulnerabilities caused by inadequate arithmetic operations.
Updated libpng packages that fix one security issue are now available for Red Hat Enterprise Linux 7

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Summary

The libpng packages contain a library of functions for creating and manipulating PNG (Portable Network Graphics) image format files.
It was discovered that the png_get_PLTE() and png_set_PLTE() functions of libpng did not correctly calculate the maximum palette sizes for bit depths of less than 8. In case an application tried to use these functions in combination with properly calculated palette sizes, this could lead to a buffer overflow or out-of-bounds reads. An attacker could exploit this to cause a crash or potentially execute arbitrary code by tricking an unsuspecting 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, which contain a backported patch to correct this issue.

Topics%20covered

Topics Covered

security advisory security update buffer overflow Red Hat Enterprise Linux libpng Moderate software packages

References

https://access.redhat.com/security/cve/CVE-2015-8126 https://access.redhat.com/security/cve/CVE-2015-8472 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: libpng-1.5.13-7.el7_2.src.rpm
x86_64: libpng-1.5.13-7.el7_2.i686.rpm libpng-1.5.13-7.el7_2.x86_64.rpm libpng-debuginfo-1.5.13-7.el7_2.i686.rpm libpng-debuginfo-1.5.13-7.el7_2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: libpng-debuginfo-1.5.13-7.el7_2.i686.rpm libpng-debuginfo-1.5.13-7.el7_2.x86_64.rpm libpng-devel-1.5.13-7.el7_2.i686.rpm libpng-devel-1.5.13-7.el7_2.x86_64.rpm libpng-static-1.5.13-7.el7_2.i686.rpm libpng-static-1.5.13-7.el7_2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: libpng-1.5.13-7.el7_2.src.rpm
x86_64: libpng-1.5.13-7.el7_2.i686.rpm libpng-1.5.13-7.el7_2.x86_64.rpm libpng-debuginfo-1.5.13-7.el7_2.i686.rpm libpng-debuginfo-1.5.13-7.el7_2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: libpng-debuginfo-1.5.13-7.el7_2.i686.rpm libpng-debuginfo-1.5.13-7.el7_2.x86_64.rpm libpng-devel-1.5.13-7.el7_2.i686.rpm libpng-devel-1.5.13-7.el7_2.x86_64.rpm libpng-static-1.5.13-7.el7_2.i686.rpm libpng-static-1.5.13-7.el7_2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: libpng-1.5.13-7.el7_2.src.rpm
aarch64: libpng-1.5.13-7.el7_2.aarch64.rpm libpng-debuginfo-1.5.13-7.el7_2.aarch64.rpm libpng-devel-1.5.13-7.el7_2.aarch64.rpm
ppc64:

Read the Full Advisory


Advisory ID: RHSA-2015:2596-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:2596.html
Issue date: 2015-12-09

Topic

Updated libpng packages that fix one security issue are now availablefor Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having Moderate securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory security update buffer overflow Red Hat Enterprise Linux libpng Moderate software packages

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1281756 - CVE-2015-8126 CVE-2015-8472 libpng: Buffer overflow vulnerabilities in png_get_PLTE/png_set_PLTE functions

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