RHSA-2016:0676: Critical: java-1.7.0-openjdk security update
The java-1.7.0-openjdk packages provide the OpenJDK 7 Java Runtime Environmentand 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 tocompletely 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 deserializingauthentication credentials. A remote, unauthenticated attacker able to connectto 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. Speciallycrafted XML input could cause a Java application to use an excessive amount ofmemory 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 digestweaker than the key strength could lead to the generation of signatures thatwere weaker than expected. (CVE-2016-0695)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2016:0676?
The severity of RHSA-2016:0676 is classified as important due to multiple flaws in the OpenJDK components.
How do I fix RHSA-2016:0676?
To fix RHSA-2016:0676, update the java-1.7.0-openjdk package to version 1.7.0-openjdk-1.7.0.101-2.6.6.1.el7_2 or later.
What impact does RHSA-2016:0676 have?
RHSA-2016:0676 can potentially allow untrusted Java applications to escape from the Java sandbox and execute arbitrary code.
Which systems are affected by RHSA-2016:0676?
RHSA-2016:0676 affects systems running Red Hat Enterprise Linux with the OpenJDK package installed.
Is RHSA-2016:0676 a critical vulnerability?
While RHSA-2016:0676 is important, it is not classified as critical but should still be addressed promptly.