USN-1521-1: IcedTea-Web vulnerabilities

Releases

• Ubuntu 12.04
• Ubuntu 11.10
• Ubuntu 11.04
• Ubuntu 10.04

Packages

• icedtea-web - A web browser plugin to execute Java applets

Details

Chamal De Silva discovered that the IcedTea-Web Java web browser
plugin could dereference an uninitialized pointer. A remote attacker
could use this to craft a malicious web page that could cause a
denial of service by crashing the web browser or possibly execute
arbitrary code. (CVE-2012-3422)

Steven Bergom and others discovered that the IcedTea-Web Java web
browser plugin assumed that all strings provided by browsers are NULL
terminated, which is not guaranteed by the NPAPI (Netscape Plugin
Application Programming Interface). A remote attacker could use this
to craft a malicious Java applet that could cause a denial of service
by crashing the web browser, expose sensitive information or possibly
execute arbitrary code. (CVE-2012-3423)

Update instructions

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

Ubuntu 12.04

• icedtea-7-plugin - 1.2-2ubuntu1.1
• icedtea-6-plugin - 1.2-2ubuntu1.1

Ubuntu 11.10

• icedtea-6-plugin - 1.2-2ubuntu0.11.10.2

Ubuntu 11.04

• icedtea-6-plugin - 1.2-2ubuntu0.11.04.2

Ubuntu 10.04

• icedtea-6-plugin - 1.2-2ubuntu0.10.04.2

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

References

• CVE-2012-3422
• CVE-2012-3423