RHSA-2012:1223 - Security Advisory

Topic

Updated java-1.7.0-openjdk packages that fix several security issues are
now available for Red Hat Enterprise Linux 6.

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

Description

These packages provide the OpenJDK 7 Java Runtime Environment and the
OpenJDK 7 Software Development Kit.

Multiple improper permission check issues were discovered in the Beans
component in OpenJDK. An untrusted Java application or applet could use
these flaws to bypass Java sandbox restrictions. (CVE-2012-4681,
CVE-2012-1682, CVE-2012-3136)

A hardening fix was applied to the AWT component in OpenJDK, removing
functionality from the restricted SunToolkit class that was used in
combination with other flaws to bypass Java sandbox restrictions.
(CVE-2012-0547)

All users of java-1.7.0-openjdk are advised to upgrade to these updated
packages, which resolve these issues. All running instances of OpenJDK Java
must be restarted for the update to take effect.

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 for x86_64 - Extended Update Support 6.3 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.3 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 Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• 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 Update Support from RHUI 6.3 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.3 i386
• 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

Fixes

• BZ - 852051 - CVE-2012-4681 OpenJDK: beans insufficient permission checks, Java 7 0day (beans, 7162473)
• BZ - 853097 - CVE-2012-1682 OpenJDK: beans ClassFinder insufficient permission checks (beans, 7162476)
• BZ - 853138 - CVE-2012-3136 OpenJDK: beans MethodElementHandler insufficient permission checks (beans, 7194567)
• BZ - 853228 - CVE-2012-0547 OpenJDK: AWT hardening fixes (AWT, 7163201)

CVEs

• CVE-2012-0547
• CVE-2012-1682
• CVE-2012-4681
• CVE-2012-3136

References

• https://access.redhat.com/security/updates/classification/#important
• http://www.oracle.com/technetwork/topics/security/alert-cve-2012-4681-1835715.html