RHSA-2014:0150 - Security Advisory

Topic

Updated gc packages that fix one security issue are now available for Red
Hat Satellite Proxy 5.6.

The Red Hat Security Response Team has rated this update as having Moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

Description

Red Hat Satellite Proxy provides a package-caching mechanism that reduces
the bandwidth requirements for Red Hat Satellite and enables custom package
deployment. Red Hat Satellite Proxy customers are able to cache RPM
packages, such as are provided by Errata Updates from Red Hat, or custom
RPM packages generated by their organization, on an internal,
centrally-located server.

gc is a Boehm-Demers-Weiser conservative garbage collector for C and C++.

It was discovered that gc's implementation of the malloc() and calloc()
routines did not properly perform parameter sanitization when allocating
memory. If an application using gc did not implement application-level
validity checks for the malloc() and calloc() routines, a remote attacker
could provide specially crafted application-specific input, which, when
processed by the application, could lead to an application crash or,
potentially, arbitrary code execution with the privileges of the user
running the application. (CVE-2012-2673)

Users of Red Hat Network Proxy 5.6 are advised to upgrade to these updated
packages, which contain a backported patch to correct this issue. For this
update to take effect, Red Hat Network Proxy must be restarted. Refer to
the Solution section for details.

Solution

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

This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

Run the following command to restart the Red Hat Network Proxy server:

# rhn-proxy restart

Affected Products

• Red Hat Satellite Proxy 5.6 for RHEL 5 x86_64
• Red Hat Satellite Proxy 5.6 for RHEL 5 s390x

Fixes

• BZ - 828878 - CVE-2012-2673 gc: malloc() and calloc() overflows

CVEs

• CVE-2012-2673

References

• https://access.redhat.com/security/updates/classification/#moderate