Issued:

2018-05-21

Updated:

2018-05-21

RHSA-2018:1650 - Important: java-1.8.0-openjdk security update

Synopsis

Important: java-1.8.0-openjdk security update

Type/Severity

Security Advisory Important

Topic

An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. 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-1.8.0-openjdk packages provide the OpenJDK 8 Java Runtime Environment and the OpenJDK 8 Java Software Development Kit.

Security Fix(es):

• An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639)

Note: This is the OpenJDK side of the CVE-2018-3639 mitigation.

Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue.

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-1.8.0-openjdk-demo-debug-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-src-debug-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-devel-debug-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-demo-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-debuginfo-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-demo-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-debug-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-devel-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-1.8.0.171-8.b10.el6_9.src.rpm
• java-1.8.0-openjdk-headless-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-devel-debug-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-headless-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-headless-debug-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-debug-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-headless-debug-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-demo-debug-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-javadoc-1.8.0.171-8.b10.el6_9.noarch.rpm
• java-1.8.0-openjdk-src-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-debuginfo-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-src-debug-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-1.8.0.171-8.b10.el6_9.i686.rpm
• java-1.8.0-openjdk-devel-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-src-1.8.0.171-8.b10.el6_9.x86_64.rpm
• java-1.8.0-openjdk-javadoc-debug-1.8.0.171-8.b10.el6_9.noarch.rpm

Fixes

• This content is not included.BZ - 1566890

CVEs

• CVE-2018-3639

References

• https://access.redhat.com/security/updates/classification/#important
• This content is not included.This content is not included.https://access.redhat.com/security/vulnerabilities/ssbd

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.