RHSA-2007:0062 - Security Advisory

Topic

Updated java-1.4.2-ibm packages to correct several security issues are now
available for Red Hat Enterprise Linux 3 and 4 Extras.

This update has been rated as having critical security impact by the Red
Hat Security Response Team.

Description

IBM's 1.4.2 SR7 Java release includes the IBM Java 2 Runtime Environment
and the IBM Java 2 Software Development Kit.

A number of security issues were found:

Vulnerabilities were discovered in the Java Runtime Environment. An
untrusted applet could use these vulnerabilities to access data from other
applets. (CVE-2006-6736, CVE-2006-6737)

Serialization flaws were discovered in the Java Runtime Environment. An
untrusted applet or application could use these flaws to elevate its
privileges. (CVE-2006-6745)

Buffer overflow vulnerabilities were discovered in the Java Runtime
Environment. An untrusted applet could use these flaws to elevate its
privileges, possibly reading and writing local files or executing local
applications. (CVE-2006-6731)

Daniel Bleichenbacher discovered an attack on PKCS #1 v1.5 signatures.
Where an RSA key with exponent 3 is used it may be possible for an attacker
to forge a PKCS #1 v1.5 signature that would be incorrectly verified by
implementations that do not check for excess data in the RSA exponentiation
result of the signature. (CVE-2006-4339)

All users of java-1.4.2-ibm should upgrade to these updated packages, which
contain IBM's 1.4.2 SR7 Java release which resolves these issues.

Solution

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Affected Products

• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for IBM z Systems 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

• BZ - 226981 - CVE-2006-6736 Multiple JRE flaws (CVE-2006-6737 CVE-2006-6745 CVE-2006-6731 CVE-2006-4339)
• BZ - 226984 - CVE-2006-6736 Multiple JRE flaws (CVE-2006-6737 CVE-2006-6745 CVE-2006-6731 CVE-2006-4339)

CVEs

• CVE-2006-4339
• CVE-2006-6737
• CVE-2006-6731
• CVE-2006-6736
• CVE-2006-6745

References

• http://www-128.ibm.com/developerworks/java/jdk/alerts/
• http://www.redhat.com/security/updates/classification/#critical