The IcedTea-Web project provides a Java web browser plug-in and an implementation of Java Web Start, which is based on the Netx project. It also contains a configuration tool for managing deployment settings for the plug-in and Web Start implementations. An uninitialized pointer use flaw was found in the IcedTea-Web plug-in. Visiting a malicious web page could possibly cause a web browser using the IcedTea-Web plug-in to crash, disclose a portion of its memory, or execute arbitrary code. (CVE-2012-3422) It was discovered that the IcedTea-Web plug-in incorrectly assumed all strings received from the browser were NUL terminated. When using the plug-in with a web browser that does not NUL terminate strings, visiting a web page containing a Java applet could possibly cause the browser to crash, disclose a portion of its memory, or execute arbitrary code. (CVE-2012-3423) Red Hat would like to thank Chamal De Silva for reporting the CVE-2012-3422 issue. This erratum also upgrades IcedTea-Web to version 1.2.1. Refer to the NEWS file, linked to in the References, for further information. All IcedTea-Web users should upgrade to these updated packages, which resolve these issues. Web browsers using the IcedTea-Web browser plug-in must be restarted for this update to take effect.
icedtea.classpath.org/bugzilla/show_bug.cgi?id=518
icedtea.classpath.org/bugzilla/show_bug.cgi?id=863
icedtea.classpath.org/hg/release/icedtea-web-1.2/file/icedtea-web-1.2.1/NEWS
icedtea.classpath.org/hg/release/icedtea-web-1.2/rev/d65bd94e0ba9
icedtea.classpath.org/hg/release/icedtea-web-1.2/rev/d7375e2a9076
lists.opensuse.org/opensuse-security-announce/2012-08/msg00003.html
lists.opensuse.org/opensuse-security-announce/2012-08/msg00004.html
lists.opensuse.org/opensuse-security-announce/2012-08/msg00005.html
lists.opensuse.org/opensuse-security-announce/2013-05/msg00020.html
lists.opensuse.org/opensuse-security-announce/2013-07/msg00013.html
lists.opensuse.org/opensuse-updates/2013-05/msg00032.html
lists.opensuse.org/opensuse-updates/2013-06/msg00030.html
lists.opensuse.org/opensuse-updates/2013-06/msg00101.html
rhn.redhat.com/errata/RHSA-2012-1132.html
secunia.com/advisories/50089
security.gentoo.org/glsa/glsa-201406-32.xml
www.ubuntu.com/usn/USN-1521-1
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=841345
rhn.redhat.com/errata/RHSA-2012-1132.html