RHSA-2012:0987 - Security Advisory

Topic

Updated sblim-cim-client2 packages that fix one security issue are now
available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low
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

The SBLIM (Standards-Based Linux Instrumentation for Manageability) CIM
(Common Information Model) Client is a class library for Java applications
that provides access to CIM servers using the CIM Operations over HTTP
protocol defined by the DMTF (Distributed Management Task Force) standards.

It was found that the Java HashMap implementation was susceptible to
predictable hash collisions. SBLIM uses HashMap when parsing XML inputs. A
specially-crafted CIM-XML message from a WBEM (Web-Based Enterprise
Management) server could cause a SBLIM client to use an excessive amount of
CPU. Randomization has been added to help avoid collisions. (CVE-2012-2328)

All users of sblim-cim-client2 are advised to upgrade to these updated
packages, which contain a backported patch to resolve this issue.

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/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 819733 - CVE-2012-2328 sblim: hash table collisions CPU usage DoS

CVEs

• CVE-2012-2328

References

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