[RHSA-2015:2595-01] Moderate: libpng12 security update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Moderate: libpng12 security update

Advisory ID: RHSA-2015:2595-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-2595.html

Issue date: 2015-12-09

CVE Names: CVE-2015-7981 CVE-2015-8126 CVE-2015-8472

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1. Summary:

 

Updated libpng12 packages that fix three security issues are now available

for Red Hat Enterprise Linux 7.

 

Red Hat Product Security has rated this update as having Moderate security

impact. Common Vulnerability Scoring System (CVSS) base scores, which

give detailed severity ratings, are available for each vulnerability

from the CVE links in the References section.

 

2. 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

 

3. Description:

 

The libpng12 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)

 

An array-indexing error was discovered in the png_convert_to_rfc1123()

function of libpng. An attacker could possibly use this flaw to cause an

out-of-bounds read by tricking an unsuspecting user into processing a

specially crafted PNG image. (CVE-2015-7981)

 

All libpng12 users are advised to upgrade to these updated packages, which

contain backported patches to correct these issues.

 

4. 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

 

5. Bugs fixed (https://bugzilla.redhat.com/):

 

1276416 - CVE-2015-7981 libpng: Out-of-bounds read in png_convert_to_rfc1123

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

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

libpng12-1.2.50-7.el7_2.src.rpm

 

x86_64:

libpng12-1.2.50-7.el7_2.i686.rpm

libpng12-1.2.50-7.el7_2.x86_64.rpm

libpng12-debuginfo-1.2.50-7.el7_2.i686.rpm

libpng12-debuginfo-1.2.50-7.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Client Optional (v. 7):

 

x86_64:

libpng12-debuginfo-1.2.50-7.el7_2.i686.rpm

libpng12-debuginfo-1.2.50-7.el7_2.x86_64.rpm

libpng12-devel-1.2.50-7.el7_2.i686.rpm

libpng12-devel-1.2.50-7.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

libpng12-1.2.50-7.el7_2.src.rpm

 

x86_64:

libpng12-1.2.50-7.el7_2.i686.rpm

libpng12-1.2.50-7.el7_2.x86_64.rpm

libpng12-debuginfo-1.2.50-7.el7_2.i686.rpm

libpng12-debuginfo-1.2.50-7.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

 

x86_64:

libpng12-debuginfo-1.2.50-7.el7_2.i686.rpm

libpng12-debuginfo-1.2.50-7.el7_2.x86_64.rpm

libpng12-devel-1.2.50-7.el7_2.i686.rpm

libpng12-devel-1.2.50-7.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

libpng12-1.2.50-7.el7_2.src.rpm

 

aarch64:

libpng12-1.2.50-7.el7_2.aarch64.rpm

libpng12-debuginfo-1.2.50-7.el7_2.aarch64.rpm

 

ppc64:

libpng12-1.2.50-7.el7_2.ppc.rpm

libpng12-1.2.50-7.el7_2.ppc64.rpm

libpng12-debuginfo-1.2.50-7.el7_2.ppc.rpm

libpng12-debuginfo-1.2.50-7.el7_2.ppc64.rpm

 

ppc64le:

libpng12-1.2.50-7.el7_2.ppc64le.rpm

libpng12-debuginfo-1.2.50-7.el7_2.ppc64le.rpm

 

s390x:

libpng12-1.2.50-7.el7_2.s390.rpm

libpng12-1.2.50-7.el7_2.s390x.rpm

libpng12-debuginfo-1.2.50-7.el7_2.s390.rpm

libpng12-debuginfo-1.2.50-7.el7_2.s390x.rpm

 

x86_64:

libpng12-1.2.50-7.el7_2.i686.rpm

libpng12-1.2.50-7.el7_2.x86_64.rpm

libpng12-debuginfo-1.2.50-7.el7_2.i686.rpm

libpng12-debuginfo-1.2.50-7.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 7):

 

aarch64:

libpng12-debuginfo-1.2.50-7.el7_2.aarch64.rpm

libpng12-devel-1.2.50-7.el7_2.aarch64.rpm

 

ppc64:

libpng12-debuginfo-1.2.50-7.el7_2.ppc.rpm

libpng12-debuginfo-1.2.50-7.el7_2.ppc64.rpm

libpng12-devel-1.2.50-7.el7_2.ppc.rpm

libpng12-devel-1.2.50-7.el7_2.ppc64.rpm

 

ppc64le:

libpng12-debuginfo-1.2.50-7.el7_2.ppc64le.rpm

libpng12-devel-1.2.50-7.el7_2.ppc64le.rpm

 

s390x:

libpng12-debuginfo-1.2.50-7.el7_2.s390.rpm

libpng12-debuginfo-1.2.50-7.el7_2.s390x.rpm

libpng12-devel-1.2.50-7.el7_2.s390.rpm

libpng12-devel-1.2.50-7.el7_2.s390x.rpm

 

x86_64:

libpng12-debuginfo-1.2.50-7.el7_2.i686.rpm

libpng12-debuginfo-1.2.50-7.el7_2.x86_64.rpm

libpng12-devel-1.2.50-7.el7_2.i686.rpm

libpng12-devel-1.2.50-7.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

libpng12-1.2.50-7.el7_2.src.rpm

 

x86_64:

libpng12-1.2.50-7.el7_2.i686.rpm

libpng12-1.2.50-7.el7_2.x86_64.rpm

libpng12-debuginfo-1.2.50-7.el7_2.i686.rpm

libpng12-debuginfo-1.2.50-7.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 7):

 

x86_64:

libpng12-debuginfo-1.2.50-7.el7_2.i686.rpm

libpng12-debuginfo-1.2.50-7.el7_2.x86_64.rpm

libpng12-devel-1.2.50-7.el7_2.i686.rpm

libpng12-devel-1.2.50-7.el7_2.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2015-7981

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

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2015 Red Hat, Inc.

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