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RHEL 5 : libpng (RHSA-2011:1104)

medium Nessus Plugin ID 55726

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated libpng packages that fix two security issues are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team 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.

The libpng packages contain a library of functions for creating and manipulating PNG (Portable Network Graphics) image format files.

A buffer overflow flaw was found in the way libpng processed certain PNG image files. An attacker could create a specially crafted PNG image that, when opened, could cause an application using libpng to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2011-2690)

Note: The application behavior required to exploit CVE-2011-2690 is rarely used. No application shipped with Red Hat Enterprise Linux behaves this way, for example.

An uninitialized memory read issue was found in the way libpng processed certain PNG images that use the Physical Scale (sCAL) extension. An attacker could create a specially crafted PNG image that, when opened, could cause an application using libpng to crash.
(CVE-2011-2692)

Users of libpng should upgrade to these updated packages, which contain backported patches to correct these issues. All running applications using libpng must be restarted for the update to take effect.

Solution

Update the affected libpng and / or libpng-devel packages.

See Also

https://access.redhat.com/security/cve/cve-2011-2690

https://access.redhat.com/security/cve/cve-2011-2692

https://access.redhat.com/errata/RHSA-2011:1104

Plugin Details

Severity: Medium

ID: 55726

File Name: redhat-RHSA-2011-1104.nasl

Version: 1.18

Type: local

Agent: unix

Published: 7/29/2011

Updated: 1/14/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libpng-devel, cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:libpng

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 7/28/2011

Vulnerability Publication Date: 7/17/2011

Reference Information

CVE: CVE-2011-2690, CVE-2011-2692

BID: 48660

RHSA: 2011:1104