1. Ubuntu Security Notices
  2. USN-1521-1

USN-1521-1: IcedTea-Web vulnerabilities

Publication date

31 July 2012

Overview

The IcedTea-Web Java web browser plugin could be made to crash or possibly run programs as your login if it opened a specially crafted applet.

Releases

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)

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
12.04 precise icedtea-7-plugin –  1.2-2ubuntu1.1
icedtea-6-plugin –  1.2-2ubuntu1.1
11.10 oneiric icedtea-6-plugin –  1.2-2ubuntu0.11.10.2
11.04 natty icedtea-6-plugin –  1.2-2ubuntu0.11.04.2
10.04 lucid icedtea-6-plugin –  1.2-2ubuntu0.10.04.2

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References

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