RHSA-2015:1920: Critical: java-1.7.0-openjdk security update
The java-1.7.0-openjdk packages provide the OpenJDK 7 Java RuntimeEnvironment and the OpenJDK 7 Java Software Development Kit.Multiple flaws were discovered in the CORBA, Libraries, RMI, Serialization,and 2D components in OpenJDK. An untrusted Java application or applet coulduse these flaws to completely bypass Java sandbox restrictions.(CVE-2015-4835, CVE-2015-4881, CVE-2015-4843, CVE-2015-4883, CVE-2015-4860,CVE-2015-4805, CVE-2015-4844)Multiple denial of service flaws were found in the JAXP component inOpenJDK. A specially crafted XML file could cause a Java application usingJAXP to consume an excessive amount of CPU and memory when parsed.(CVE-2015-4803, CVE-2015-4893, CVE-2015-4911)It was discovered that the Security component in OpenJDK failed to properlycheck if a certificate satisfied all defined constraints. In certain cases,this could cause a Java application to accept an X.509 certificate whichdoes not meet requirements of the defined policy. (CVE-2015-4872)Multiple flaws were found in the Libraries, 2D, CORBA, JAXP, JGSS, and RMIcomponents in OpenJDK. An untrusted Java application or applet could usethese flaws to bypass certain Java sandbox restrictions. (CVE-2015-4806,CVE-2015-4840, CVE-2015-4882, CVE-2015-4842, CVE-2015-4734, CVE-2015-4903)Red Hat would like to thank Andrea Palazzo of Truel IT for reporting theCVE-2015-4806 issue.Note: If the web browser plug-in provided by the icedtea-web package wasinstalled, the issues exposed via Java applets could have been exploitedwithout user interaction if a user visited a malicious website.All users of java-1.7.0-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.
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Frequently Asked Questions
What is the severity of RHSA-2015:1920?
The severity of RHSA-2015:1920 is classified as important due to the potential for remote code execution vulnerabilities.
How do I fix RHSA-2015:1920?
To fix RHSA-2015:1920, update the java-1.7.0-openjdk packages to version 1.7.0-openjdk-1.7.0.91-2.6.2.1.el7_1 or later.
What systems are affected by RHSA-2015:1920?
RHSA-2015:1920 affects systems running OpenJDK Java Runtime Environment and Software Development Kit versions prior to the specified updates.
What specific flaws does RHSA-2015:1920 address?
RHSA-2015:1920 addresses multiple flaws in the CORBA, Libraries, RMI, Serialization, and 2D components of OpenJDK.
Is there a workaround for RHSA-2015:1920?
The recommended action is to apply the security update, as there are no known workarounds for RHSA-2015:1920.