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========================================================================== Ubuntu Security Notice USN-2706-1 August 06, 2015
openjdk-6 vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in OpenJDK 6.
Software Description: - openjdk-6: Open Source Java implementation
Details:
Several vulnerabilities were discovered in the OpenJDK JRE related to information disclosure, data integrity, and availability. An attacker could exploit these to cause a denial of service or expose sensitive data over the network. (CVE-2015-2590, CVE-2015-2628, CVE-2015-4731, CVE-2015-4732, CVE-2015-4733, CVE-2015-4760, CVE-2015-4748)
Several vulnerabilities were discovered in the cryptographic components of the OpenJDK JRE. An attacker could exploit these to expose sensitive data over the network. (CVE-2015-2601, CVE-2015-2808, CVE-2015-4000, CVE-2015-2625, CVE-2015-2613)
As a security improvement, this update modifies OpenJDK behavior to disable RC4 TLS/SSL cipher suites by default.
As a security improvement, this update modifies OpenJDK behavior to reject DH key sizes below 768 bits by default, preventing a possible downgrade attack.
Several vulnerabilities were discovered in the OpenJDK JRE related to information disclosure. An attacker could exploit these to expose sensitive data over the network. (CVE-2015-2621, CVE-2015-2632)
A vulnerability was discovered with how the JNDI component of the OpenJDK JRE handles DNS resolutions. A remote attacker could exploit this to cause a denial of service. (CVE-2015-4749)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 12.04 LTS: icedtea-6-jre-cacao 6b36-1.13.8-0ubuntu1~12.04 icedtea-6-jre-jamvm 6b36-1.13.8-0ubuntu1~12.04 openjdk-6-jdk 6b36-1.13.8-0ubuntu1~12.04 openjdk-6-jre 6b36-1.13.8-0ubuntu1~12.04 openjdk-6-jre-headless 6b36-1.13.8-0ubuntu1~12.04 openjdk-6-jre-lib 6b36-1.13.8-0ubuntu1~12.04 openjdk-6-jre-zero 6b36-1.13.8-0ubuntu1~12.04 openjdk-6-source 6b36-1.13.8-0ubuntu1~12.04
This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart any Java applications or applets to make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-2706-1 CVE-2015-2590, CVE-2015-2601, CVE-2015-2621, CVE-2015-2625, CVE-2015-2628, CVE-2015-2632, CVE-2015-2808, CVE-2015-4000, CVE-2015-4731, CVE-2015-4732, CVE-2015-4733, CVE-2015-4748, CVE-2015-4749, CVE-2015-4760
Package Information: https://launchpad.net/ubuntu/+source/openjdk-6/6b36-1.13.8-0ubuntu1~12.04
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