Topic

Updated java-1.6.0-openjdk packages that fix several security issues and
two bugs 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 6 Java Runtime Environment and the
OpenJDK 6 Software Development Kit.

defaultReadObject of the Serialization API could be tricked into setting a
volatile field multiple times, which could allow a remote attacker to
execute arbitrary code with the privileges of the user running the applet
or application. (CVE-2010-3569)

Race condition in the way objects were deserialized could allow an
untrusted applet or application to misuse the privileges of the user
running the applet or application. (CVE-2010-3568)

Miscalculation in the OpenType font rendering implementation caused
out-of-bounds memory access, which could allow remote attackers to execute
code with the privileges of the user running the java process.
(CVE-2010-3567)

JPEGImageWriter.writeImage in the imageio API improperly checked certain
image metadata, which could allow a remote attacker to execute arbitrary
code in the context of the user running the applet or application.
(CVE-2010-3565)

Double free in IndexColorModel could cause an untrusted applet or
application to crash or, possibly, execute arbitrary code with the
privileges of the user running the applet or application. (CVE-2010-3562)

The privileged accept method of the ServerSocket class in the Common Object
Request Broker Architecture (CORBA) implementation in OpenJDK allowed it to
receive connections from any host, instead of just the host of the current
connection. An attacker could use this flaw to bypass restrictions defined
by network permissions. (CVE-2010-3561)

Flaws in the Swing library could allow an untrusted application to modify
the behavior and state of certain JDK classes. (CVE-2010-3557)

Flaws in the CORBA implementation could allow an attacker to execute
arbitrary code by misusing permissions granted to certain system objects.
(CVE-2010-3554)

UIDefault.ProxyLazyValue had unsafe reflection usage, allowing untrusted
callers to create objects via ProxyLazyValue values. (CVE-2010-3553)

HttpURLConnection improperly handled the "chunked" transfer encoding
method, which could allow remote attackers to conduct HTTP response
splitting attacks. (CVE-2010-3549)

HttpURLConnection improperly checked whether the calling code was granted
the "allowHttpTrace" permission, allowing untrusted code to create HTTP
TRACE requests. (CVE-2010-3574)

HttpURLConnection did not validate request headers set by applets, which
could allow remote attackers to trigger actions otherwise restricted to
HTTP clients. (CVE-2010-3541, CVE-2010-3573)

The Kerberos implementation improperly checked the sanity of AP-REQ
requests, which could cause a denial of service condition in the receiving
Java Virtual Machine. (CVE-2010-3564)

The java-1.6.0-openjdk packages shipped with the GA release of Red Hat
Enterprise Linux 6 mitigated a man-in-the-middle attack in the way the
TLS/SSL protocols handle session renegotiation by disabling renegotiation.
This update implements the TLS Renegotiation Indication Extension as
defined in RFC 5746, allowing secure renegotiation between updated clients
and servers. (CVE-2009-3555)

The NetworkInterface class improperly checked the network "connect"
permissions for local network addresses, which could allow remote attackers
to read local network addresses. (CVE-2010-3551)

Information leak flaw in the Java Naming and Directory Interface (JNDI)
could allow a remote attacker to access information about
otherwise-protected internal network names. (CVE-2010-3548)

Note: Flaws concerning applets in this advisory (CVE-2010-3568,
CVE-2010-3554, CVE-2009-3555, CVE-2010-3562, CVE-2010-3557, CVE-2010-3548,
CVE-2010-3564, CVE-2010-3565, CVE-2010-3569) can only be triggered in
OpenJDK by calling the "appletviewer" application.

Bug fixes:

• One defense in depth patch. (BZ#639922)
• Problems for certain SSL connections. In a reported case, this prevented

the JBoss JAAS modules from connecting over SSL to Microsoft Active
Directory servers. (BZ#642779)

Solution

All java-1.6.0-openjdk users 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.

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 Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• 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 Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64

Fixes

• BZ - 533125 - CVE-2009-3555 TLS: MITM attacks via session renegotiation
• BZ - 639876 - CVE-2010-3568 OpenJDK Deserialization Race condition (6559775)
• BZ - 639880 - CVE-2010-3554 CVE-2010-3561 OpenJDK corba reflection vulnerabilities (6891766,6925672)
• BZ - 639897 - CVE-2010-3562 OpenJDK IndexColorModel double-free (6925710)
• BZ - 639904 - CVE-2010-3557 OpenJDK Swing mutable static (6938813)
• BZ - 639909 - CVE-2010-3548 OpenJDK DNS server IP address information leak (6957564)
• BZ - 639914 - CVE-2010-3564 OpenJDK kerberos vulnerability (6958060)
• BZ - 639920 - CVE-2010-3565 OpenJDK JPEG writeImage remote code execution (6963023)
• BZ - 639922 - CVE-2010-3566 OpenJDK ICC Profile remote code execution (6963489)
• BZ - 639925 - CVE-2010-3569 OpenJDK Serialization inconsistencies (6966692)
• BZ - 642167 - CVE-2010-3553 OpenJDK Swing unsafe reflection usage (6622002)
• BZ - 642180 - CVE-2010-3549 OpenJDK HttpURLConnection request splitting (6952017)
• BZ - 642187 - CVE-2010-3551 OpenJDK local network address disclosure (6952603)
• BZ - 642197 - CVE-2010-3567 OpenJDK ICU Opentype layout engine crash (6963285)
• BZ - 642202 - CVE-2010-3541 CVE-2010-3573 OpenJDK HttpURLConnection allows arbitrary request headers (6961084,6980004)
• BZ - 642215 - CVE-2010-3574 OpenJDK HttpURLConnection incomplete TRACE permission check (6981426)
• BZ - 642779 - Error connecting to Active Directory (AD) over SSL.

CVEs

• CVE-2009-3555
• CVE-2010-3564
• CVE-2010-3565
• CVE-2010-3574
• CVE-2010-3557
• CVE-2010-3562
• CVE-2010-3541
• CVE-2010-3568
• CVE-2010-3569
• CVE-2010-3553
• CVE-2010-3567
• CVE-2010-3551
• CVE-2010-3561
• CVE-2010-3548
• CVE-2010-3549
• CVE-2010-3573
• CVE-2010-3554

References

• http://www.redhat.com/security/updates/classification/#important
• https://access.redhat.com/kb/docs/DOC-20491