Ubuntu Security Notice 1907-2 - USN-1907-1 fixed vulnerabilities in OpenJDK 7. Due to upstream changes, IcedTea Web needed an update to work with the new OpenJDK 7. Several vulnerabilities were discovered in the OpenJDK JRE related to information disclosure and data integrity. An attacker could exploit these to expose sensitive data over the network. CVE-2013-2458) Various other issues were also addressed.
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