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Ubuntu Security Notice USN-3154-1

Ubuntu Security Notice USN-3154-1
Posted Dec 8, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3154-1 - It was discovered that OpenJDK did not restrict the set of algorithms used for Jar integrity verification. An attacker could use this to modify without detection the content of a JAR file, affecting system integrity. It was discovered that the JMX component of OpenJDK did not sufficiently perform classloader consistency checks. An attacker could use this to bypass Java sandbox restrictions. Various other issues were also addressed.

tags | advisory, java
systems | linux, ubuntu
advisories | CVE-2016-5542, CVE-2016-5554, CVE-2016-5573, CVE-2016-5582, CVE-2016-5597
SHA-256 | 23e1920a16b9445560e5bddeb4e1bfe384398c0701a5807681e3784626881404

Ubuntu Security Notice USN-3154-1

Change Mirror Download

==========================================================================
Ubuntu Security Notice USN-3154-1
December 08, 2016

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:

It was discovered that OpenJDK did not restrict the set of algorithms used
for Jar integrity verification. An attacker could use this to modify
without detection the content of a JAR file, affecting system integrity.
(CVE-2016-5542)

It was discovered that the JMX component of OpenJDK did not sufficiently
perform classloader consistency checks. An attacker could use this to
bypass Java sandbox restrictions. (CVE-2016-5554)

It was discovered that the Hotspot component of OpenJDK did not properly
check received Java Debug Wire Protocol (JDWP) packets. An attacker could
use this to send debugging commands to a Java application with debugging
enabled. (CVE-2016-5573)

It was discovered that the Hotspot component of OpenJDK did not properly
check arguments of the System.arraycopy() function in certain cases. An
attacker could use this to bypass Java sandbox restrictions.
(CVE-2016-5582)

It was discovered that OpenJDK did not properly handle HTTP proxy
authentication. An attacker could use this to expose HTTPS server
authentication credentials. (CVE-2016-5597)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
icedtea-6-jre-cacao 6b40-1.13.12-0ubuntu0.12.04.2
icedtea-6-jre-jamvm 6b40-1.13.12-0ubuntu0.12.04.2
openjdk-6-jdk 6b40-1.13.12-0ubuntu0.12.04.2
openjdk-6-jre 6b40-1.13.12-0ubuntu0.12.04.2
openjdk-6-jre-headless 6b40-1.13.12-0ubuntu0.12.04.2
openjdk-6-jre-lib 6b40-1.13.12-0ubuntu0.12.04.2

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-3154-1
CVE-2016-5542, CVE-2016-5554, CVE-2016-5573, CVE-2016-5582,
CVE-2016-5597

Package Information:
https://launchpad.net/ubuntu/+source/openjdk-6/6b40-1.13.12-0ubuntu0.12.04.2


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