Ubuntu Security Notice USN-2706-1

6th August, 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 version:

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-source

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-zero

6b36-1.13.8-0ubuntu1~12.04

openjdk-6-jre-lib

6b36-1.13.8-0ubuntu1~12.04

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

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

Ubuntu Security Notice USN-2707-1

7th August, 2015

firefox vulnerability

A security issue affects these releases of Ubuntu and its
derivatives:

• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

Firefox could be made to expose sensitive information from local files.

Software description

• firefox
  – Mozilla Open Source web browser

Details

Cody Crews discovered a way to violate the same-origin policy to inject
script in to a non-privileged part of the PDF viewer. If a user were
tricked in to opening a specially crafted website, an attacker could
exploit this to read sensitive information from local files.
(CVE-2015-4495)

Update instructions

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

Ubuntu 15.04:

firefox

39.0.3+build2-0ubuntu0.15.04.1

Ubuntu 14.04 LTS:

firefox

39.0.3+build2-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:

firefox

39.0.3+build2-0ubuntu0.12.04.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart Firefox to make
all the necessary changes.

References

CVE-2015-4495