[USN-1804-2] IcedTea-Web regression

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
Comment: Using GnuPG with undefined - http://www.enigmail.net/
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=+SWS
-----END PGP SIGNATURE-----
==========================================================================
Ubuntu Security Notice USN-1804-2
April 23, 2013

icedtea-web regression
==========================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10

Summary:

Due to a regression, IcedTea-Web might not be able to access some sites.

Software Description:
- icedtea-web: A web browser plugin to execute Java applets

Details:

USN-1804-1 fixed vulnerabilities in IcedTea-Web. This update introduced
a regression with the Java Network Launching Protocol (JNLP) when fetching
content over SSL under certain configurations, such as when using the
community-supported IcedTead 7 browser plugin. This update fixes the
problem.

We apologize for the inconvenience.

Original advisory details:

Jiri Vanek discovered that IcedTea-Web would use the same classloader for
applets from different domains. A remote attacker could exploit this to
expose sensitive information or potentially manipulate applets from other
domains. (CVE-2013-1926)

It was discovered that IcedTea-Web did not properly verify JAR files and
was susceptible to the GIFAR attack. If a user were tricked into opening a
malicious website, a remote attacker could potentially exploit this to
execute code under certain circumstances. (CVE-2013-1927)

Update instructions:

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

Ubuntu 12.04 LTS:
icedtea-7-plugin 1.2.3-0ubuntu0.12.04.2
icedtea-netx 1.2.3-0ubuntu0.12.04.2

Ubuntu 11.10:
icedtea-netx 1.2.3-0ubuntu0.11.10.2

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

References:
http://www.ubuntu.com/usn/usn-1804-2
http://www.ubuntu.com/usn/usn-1804-1
https://launchpad.net/bugs/1171506

Package Information:
https://launchpad.net/ubuntu/+source/icedtea-web/1.2.3-0ubuntu0.12.04.2
https://launchpad.net/ubuntu/+source/icedtea-web/1.2.3-0ubuntu0.11.10.2