Issued:

2016-04-21

Updated:

2016-04-21

RHSA-2016:0675 - Critical: java-1.7.0-openjdk security update

Synopsis

Critical: java-1.7.0-openjdk security update

Type/Severity

Security Advisory Critical

Topic

An update for java-1.7.0-openjdk is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The java-1.7.0-openjdk packages provide the OpenJDK 7 Java Runtime Environment and the OpenJDK 7 Java Software Development Kit.

Security Fix(es):

• Multiple flaws were discovered in the Serialization and Hotspot components in OpenJDK. An untrusted Java application or applet could use these flaws to completely bypass Java sandbox restrictions. (CVE-2016-0686, CVE-2016-0687)

• It was discovered that the RMI server implementation in the JMX component in OpenJDK did not restrict which classes can be deserialized when deserializing authentication credentials. A remote, unauthenticated attacker able to connect to a JMX port could possibly use this flaw to trigger deserialization flaws. (CVE-2016-3427)

• It was discovered that the JAXP component in OpenJDK failed to properly handle Unicode surrogate pairs used as part of the XML attribute values. Specially crafted XML input could cause a Java application to use an excessive amount of memory when parsed. (CVE-2016-3425)

• It was discovered that the Security component in OpenJDK failed to check the digest algorithm strength when generating DSA signatures. The use of a digest weaker than the key strength could lead to the generation of signatures that were weaker than expected. (CVE-2016-0695)

Note: If the web browser plug-in provided by the icedtea-web package was installed, the issues exposed via Java applets could have been exploited without user interaction if a user visited a malicious website.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

All running instances of OpenJDK Java must be restarted for this update to take effect.

Affected Products

Updated Packages

• java-1.7.0-openjdk-demo-1.7.0.101-2.6.6.1.el6_7.x86_64.rpm
• java-1.7.0-openjdk-debuginfo-1.7.0.101-2.6.6.1.el6_7.i686.rpm
• java-1.7.0-openjdk-javadoc-1.7.0.101-2.6.6.1.el6_7.noarch.rpm
• java-1.7.0-openjdk-1.7.0.101-2.6.6.1.el6_7.src.rpm
• java-1.7.0-openjdk-devel-1.7.0.101-2.6.6.1.el6_7.i686.rpm
• java-1.7.0-openjdk-devel-1.7.0.101-2.6.6.1.el6_7.x86_64.rpm
• java-1.7.0-openjdk-1.7.0.101-2.6.6.1.el6_7.x86_64.rpm
• java-1.7.0-openjdk-demo-1.7.0.101-2.6.6.1.el6_7.i686.rpm
• java-1.7.0-openjdk-src-1.7.0.101-2.6.6.1.el6_7.i686.rpm
• java-1.7.0-openjdk-src-1.7.0.101-2.6.6.1.el6_7.x86_64.rpm
• java-1.7.0-openjdk-1.7.0.101-2.6.6.1.el6_7.i686.rpm
• java-1.7.0-openjdk-debuginfo-1.7.0.101-2.6.6.1.el6_7.x86_64.rpm

Fixes

• This content is not included.BZ - 1327743
• This content is not included.BZ - 1327749
• This content is not included.BZ - 1328022
• This content is not included.BZ - 1328040
• This content is not included.BZ - 1328210

CVEs

• CVE-2016-0686
• CVE-2016-0687
• CVE-2016-0695
• CVE-2016-3425
• CVE-2016-3427

References

• http://www.redhat.com/security/updates/classification/#normal

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.