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==========================================================================
Ubuntu Security Notice USN-1192-3
October 19, 2011

libvoikko regression
==========================================================================

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

- Ubuntu 11.04

Summary:

A regression caused Firefox to crash while spell checking in Finnish.

Software Description:
- libvoikko: Library of Finnish language tools

Details:

USN-1192-1 provided Firefox 6 as a security upgrade. Unfortunately, this
caused a regression in libvoikko which caused Firefox to crash while spell
checking words with hyphens. This update corrects the issue. We apologize
for the inconvenience.

Original advisory details:

 Aral Yaman discovered a vulnerability in the WebGL engine. An attacker
 could potentially use this to crash Firefox or execute arbitrary code with
 the privileges of the user invoking Firefox. (CVE-2011-2989)
 
 Vivekanand Bolajwar discovered a vulnerability in the JavaScript engine. An
 attacker could potentially use this to crash Firefox or execute arbitrary
 code with the privileges of the user invoking Firefox. (CVE-2011-2991)
 
 Bert Hubert and Theo Snelleman discovered a vulnerability in the Ogg
 reader. An attacker could potentially use this to crash Firefox or execute
 arbitrary code with the privileges of the user invoking Firefox.
 (CVE-2011-2991)
 
 Robert Kaiser, Jesse Ruderman, Gary Kwong, Christoph Diehl, Martijn
 Wargers, Travis Emmitt, Bob Clary, and Jonathan Watt discovered multiple
 memory vulnerabilities in the browser rendering engine. An attacker could
 use these to possibly execute arbitrary code with the privileges of the
 user invoking Firefox. (CVE-2011-2985)
 
 Rafael Gieschke discovered that unsigned JavaScript could call into a
 script inside a signed JAR. This could allow an attacker to execute
 arbitrary code with the identity and permissions of the signed JAR.
 (CVE-2011-2993)
 
 Michael Jordon discovered that an overly long shader program could cause a
 buffer overrun. An attacker could potentially use this to crash Firefox or
 execute arbitrary code with the privileges of the user invoking Firefox.
 (CVE-2011-2988)
 
 Michael Jordon discovered a heap overflow in the ANGLE library used in
 Firefox's WebGL implementation. An attacker could potentially use this to
 crash Firefox or execute arbitrary code with the privileges of the user
 invoking Firefox. (CVE-2011-2987)
 
 It was discovered that an SVG text manipulation routine contained a
 dangling pointer vulnerability. An attacker could potentially use this to
 crash Firefox or execute arbitrary code with the privileges of the user
 invoking Firefox. (CVE-2011-0084)
 
 Mike Cardwell discovered that Content Security Policy violation reports
 failed to strip out proxy authorization credentials from the list of
 request headers. This could allow a malicious website to capture proxy
 authorization credentials. Daniel Veditz discovered that redirecting to a
 website with Content Security Policy resulted in the incorrect resolution
 of hosts in the constructed policy. This could allow a malicious website to
 circumvent the Content Security Policy of another website. (CVE-2011-2990)

Update instructions:

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

Ubuntu 11.04:
  libvoikko1                      3.1-1ubuntu0.1

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

References:
  http://www.ubuntu.com/usn/usn-1192-3
  http://www.ubuntu.com/usn/usn-1192-1
  https://launchpad.net/bugs/832582

Package Information:
  https://launchpad.net/ubuntu/+source/libvoikko/3.1-1ubuntu0.1




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