Ubuntu 11.04 / 11.10 : firefox vulnerabilities (USN-1277-1)

Ubuntu Security Notice (C) 2011-2014 Canonical, Inc. / NASL script (C) 2011-2014 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

Yosuke Hasegawa discovered that the Mozilla browser engine mishandled
invalid sequences in the Shift-JIS encoding. It may be possible to
trigger this crash without the use of debugging APIs, which might
allow malicious websites to exploit this vulnerability. An attacker
could possibly use this flaw this to steal data or inject malicious
scripts into web content. (CVE-2011-3648)

Marc Schoenefeld discovered that using Firebug to profile a JavaScript
file with many functions would cause Firefox to crash. An attacker
might be able to exploit this without using the debugging APIs, which
could potentially remotely crash the browser, resulting in a denial of
service. (CVE-2011-3650)

Jason Orendorff, Boris Zbarsky, Gregg Tavares, Mats Palmgren,
Christian Holler, Jesse Ruderman, Simona Marcu, Bob Clary, and William
McCloskey discovered multiple memory safety bugs in the browser engine
used in Firefox and other Mozilla-based products. An attacker might be
able to use these flaws to execute arbitrary code with the privileges
of the user invoking Firefox or possibly crash the browser resulting
in a denial of service. (CVE-2011-3651)

It was discovered that Firefox could be caused to crash under certain
conditions, due to an unchecked allocation failure, resulting in a
denial of service. It might also be possible to execute arbitrary code
with the privileges of the user invoking Firefox. (CVE-2011-3652)

Aki Helin discovered that Firefox does not properly handle links from
SVG mpath elements to non-SVG elements. An attacker could use this
vulnerability to crash Firefox, resulting in a denial of service, or
possibly execute arbitrary code with the privileges of the user
invoking Firefox. (CVE-2011-3654)

It was discovered that an internal privilege check failed to respect
the NoWaiverWrappers introduced with Firefox 4. An attacker could
possibly use this to gain elevated privileges within the browser for
web content. (CVE-2011-3655).

Solution :

Update the affected firefox package.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.7
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 56944 ()

Bugtraq ID: 50593
50594
50595
50597
50600
50602

CVE ID: CVE-2011-3648
CVE-2011-3650
CVE-2011-3651
CVE-2011-3652
CVE-2011-3654
CVE-2011-3655