RHSA-2011:0281 - Security Advisory

Topic

Updated java-1.6.0-openjdk packages that fix several security issues are
now available for Red Hat Enterprise Linux 5 and 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 6 Java Runtime Environment and the
OpenJDK 6 Software Development Kit.

A flaw was found in the Swing library. Forged TimerEvents could be used to
bypass SecurityManager checks, allowing access to otherwise blocked files
and directories. (CVE-2010-4465)

A flaw was found in the HotSpot component in OpenJDK. Certain bytecode
instructions confused the memory management within the Java Virtual Machine
(JVM), which could lead to heap corruption. (CVE-2010-4469)

A flaw was found in the way JAXP (Java API for XML Processing) components
were handled, allowing them to be manipulated by untrusted applets. This
could be used to elevate privileges and bypass secure XML processing
restrictions. (CVE-2010-4470)

It was found that untrusted applets could create and place cache entries in
the name resolution cache. This could allow an attacker targeted
manipulation over name resolution until the OpenJDK VM is restarted.
(CVE-2010-4448)

It was found that the Java launcher provided by OpenJDK did not check the
LD_LIBRARY_PATH environment variable for insecure empty path elements. A
local attacker able to trick a user into running the Java launcher while
working from an attacker-writable directory could use this flaw to load an
untrusted library, subverting the Java security model. (CVE-2010-4450)

A flaw was found in the XML Digital Signature component in OpenJDK.
Untrusted code could use this flaw to replace the Java Runtime Environment
(JRE) XML Digital Signature Transform or C14N algorithm implementations to
intercept digital signature operations. (CVE-2010-4472)

Note: All of the above flaws can only be remotely triggered in OpenJDK by
calling the "appletviewer" application.

This update also provides one defense in depth patch. (BZ#676019)

All users of java-1.6.0-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
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 5.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 5.6 i386
• Red Hat Enterprise Linux Server - AUS 5.6 x86_64
• Red Hat Enterprise Linux Server - AUS 5.6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 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 from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 5.6 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 5.6 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 - 675942 - CVE-2010-4472 OpenJDK untrusted code allowed to replace DSIG/C14N implementation (6994263)
• BZ - 675958 - CVE-2010-4469 OpenJDK Hotspot verifier heap corruption (6878713)
• BZ - 675984 - CVE-2010-4465 OpenJDK Swing timer-based security manager bypass (6907662)
• BZ - 676005 - CVE-2010-4470 OpenJDK JAXP untrusted component state manipulation (6927050)
• BZ - 676019 - CVE-2010-4471 OpenJDK Java2D font-related system property leak (6985453)
• BZ - 676023 - CVE-2010-4448 OpenJDK DNS cache poisoning by untrusted applets (6981922)
• BZ - 676026 - CVE-2010-4450 OpenJDK Launcher incorrect processing of empty library path entries (6983554)

CVEs

• CVE-2010-4469
• CVE-2010-4450
• CVE-2010-4448
• CVE-2010-4470
• CVE-2010-4472
• CVE-2010-4465

References

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