RHSA-2015:0809: Important: java-1.8.0-openjdk security update
The java-1.8.0-openjdk packages provide the OpenJDK 8 Java RuntimeEnvironment and the OpenJDK 8 Java Software Development Kit.An off-by-one flaw, leading to a buffer overflow, was found in the fontparsing code in the 2D component in OpenJDK. A specially crafted font filecould possibly cause the Java Virtual Machine to execute arbitrary code,allowing an untrusted Java application or applet to bypass Java sandboxrestrictions. (CVE-2015-0469)A flaw was found in the way the Hotspot component in OpenJDK handledphantom references. An untrusted Java application or applet could use thisflaw to corrupt the Java Virtual Machine memory and, possibly, executearbitrary code, bypassing Java sandbox restrictions. (CVE-2015-0460)A flaw was found in the way the JSSE component in OpenJDK parsed X.509certificate options. A specially crafted certificate could cause JSSE toraise an exception, possibly causing an application using JSSE to exitunexpectedly. (CVE-2015-0488)Multiple flaws were discovered in the Beans and Hotspot components inOpenJDK. An untrusted Java application or applet could use these flaws tobypass certain Java sandbox restrictions. (CVE-2015-0477, CVE-2015-0470)A directory traversal flaw was found in the way the jar tool extracted JARarchive files. A specially crafted JAR archive could cause jar to overwritearbitrary files writable by the user running jar when the archive wasextracted. (CVE-2005-1080, CVE-2015-0480)It was found that the RSA implementation in the JCE component in OpenJDKdid not follow recommended practices for implementing RSA signatures.(CVE-2015-0478)The CVE-2015-0478 issue was discovered by Florian Weimer of Red HatProduct Security.All users of java-1.8.0-openjdk are advised to upgrade to these updatedpackages, which resolve these issues. All running instances of OpenJDK Javamust be restarted for the update to take effect.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2015:0809?
The severity of RHSA-2015:0809 is classified as important due to the potential buffer overflow vulnerability.
How do I fix RHSA-2015:0809?
To fix RHSA-2015:0809, update to the recommended packages: java-1.8.0-openjdk-1.8.0.45-30.b13.el7_1 and its associated packages.
What systems are affected by RHSA-2015:0809?
RHSA-2015:0809 affects systems running OpenJDK 8 prior to version 1.8.0-openjdk-1.8.0.45-30.b13.el7_1.
What is the nature of the vulnerability in RHSA-2015:0809?
The nature of the vulnerability in RHSA-2015:0809 involves an off-by-one error leading to a buffer overflow in font parsing.
Is there a risk of exploitation associated with RHSA-2015:0809?
Yes, there is a risk of exploitation associated with RHSA-2015:0809 if the affected software processes specially crafted font files.