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RHSA-2012:0135: java-1.6.0-openjdk security update

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RHSA-2012:0135: java-1.6.0-openjdk security update



These packages provide the OpenJDK 6 Java Runtime Environment and theOpenJDK 6 Software Development Kit.It was discovered that Java2D did not properly check graphics renderingobjects before passing them to the native renderer. Malicious input, or anuntrusted Java application or applet could use this flaw to crash the JavaVirtual Machine (JVM), or bypass Java sandbox restrictions. (CVE-2012-0497)It was discovered that the exception thrown on deserialization failure didnot always contain a proper identification of the cause of the failure. Anuntrusted Java application or applet could use this flaw to bypass Javasandbox restrictions. (CVE-2012-0505)The AtomicReferenceArray class implementation did not properly check ifthe array was of the expected Object[] type. A malicious Java applicationor applet could use this flaw to bypass Java sandbox restrictions.(CVE-2011-3571)It was discovered that the use of TimeZone.setDefault() was not restrictedby the SecurityManager, allowing an untrusted Java application or applet toset a new default time zone, and hence bypass Java sandbox restrictions.(CVE-2012-0503)The HttpServer class did not limit the number of headers read from HTTPrequests. A remote attacker could use this flaw to make an applicationusing HttpServer use an excessive amount of CPU time via aspecially-crafted request. This update introduces a header count limitcontrolled using the sun.net.httpserver.maxReqHeaders property. The defaultvalue is 200. (CVE-2011-5035)The Java Sound component did not properly check buffer boundaries.Malicious input, or an untrusted Java application or applet could use thisflaw to cause the Java Virtual Machine (JVM) to crash or disclose a portionof its memory. (CVE-2011-3563)A flaw was found in the AWT KeyboardFocusManager that could allow anuntrusted Java application or applet to acquire keyboard focus and possiblysteal sensitive information. (CVE-2012-0502)It was discovered that the CORBA (Common Object Request BrokerArchitecture) implementation in Java did not properly protect repositoryidentifiers on certain CORBA objects. This could have been used to modifyimmutable object data. (CVE-2012-0506)An off-by-one flaw, causing a stack overflow, was found in the unpacker forZIP files. A specially-crafted ZIP archive could cause the Java VirtualMachine (JVM) to crash when opened. (CVE-2012-0501)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.This erratum also upgrades the OpenJDK package to IcedTea6 1.10.6. Refer tothe NEWS file, linked to in the References, for further information.All users of java-1.6.0-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.


  • redhat-upgrade-java-1-6-0-openjdk
  • redhat-upgrade-java-1-6-0-openjdk-debuginfo
  • redhat-upgrade-java-1-6-0-openjdk-demo
  • redhat-upgrade-java-1-6-0-openjdk-devel
  • redhat-upgrade-java-1-6-0-openjdk-javadoc
  • redhat-upgrade-java-1-6-0-openjdk-src

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