Firefox Multiple Vulnerabilities

[TheTerrorist_75]

VERIFY ADVISORY: SECUNIA ADVISORY ID: SA20376

CRITICAL: http://secunia.com/about_secunia_advisories/

IMPACT: Security Bypass, Cross Site Scripting, System access

WHERE: From remote

SOFTWARE:

Mozilla Firefox 1.x

Mozilla Firefox 0.x

DESCRIPTION:

Multiple vulnerabilities have been reported in Firefox, which can be

exploited by malicious people to bypass certain security

restrictions, conduct cross-site scripting and HTTP response

smuggling attacks, and potentially compromise a user's system.

1) An error in the sandbox protection of JavaScript run via

EvalInSandbox can be exploited to execute arbitrary JavaScript code

with escalated privileges by calling the "valueOf()" function on

external objects outside of the sandbox.

Successful exploitation requires that the attacker is able to execute

JavaScript code inside the EvalInSandbox (e.g. via a Proxy Autoconfig

script or a third-party extension using the vulnerable

functionality).

2) Some errors in the browser engine can be exploited to cause a

memory corruption.

Successful exploitation may allow execution of arbitrary code.

3) Two errors in the handling of specially crafted HTTP responses in

certain situations can be exploited to cause the browser to process a

response as two separate responses from different sites.

Successful exploitation allows execution of arbitrary HTML and script

in a user's browser session in context of an arbitrary site, but

requires that the browser is configured to use a proxy or that the

malicious site shares the same IP address as the targeted site.

4) Two errors in the handling of the "View Image" and "Show only this

frame" functionalities can be exploited to execute arbitrary HTML and

script code in a user's browser session in context of an arbitrary

site by e.g. tricking a user into right-clicking and choosing "View

Image" on a broken image.

5) An error caused due to persisted XUL attributes in certain

situations being associated with an incorrect URL can be exploited to

execute arbitrary JavaScript code with escalated privileges.

6) An error caused due to content-defined setters on an object

prototype being called by privileged code in the user interface can

be exploited to execute arbitrary JavaScript code with escalated

privileges.

7) An error caused due to an off-by-two array boundary error in the

"crypto.signText()" function can be exploited to cause a buffer

overflow by passing optional Certificate Authority name arguments.

8) An error exists due to Unicode Byte-order-Mark (BOM) data being

stripped from documents served in UTF-8 during the conversion to

Unicode. This can be exploited to bypass certain HTML and JavaScript

filtering mechanisms in web applications using the UTF-8 character

encoding.

9) An error in the processing of the addSelectionListener when

handling notifications in certain situations can be exploited to

execute arbitrary JavaScript code with escalated privileges.

SOLUTION: Update to version 1.5.0.4.

PROVIDED AND/OR DISCOVERED BY:

1) moz_bug_r_a4

2) Mozilla Developers

3) Kazuho Oku, Cybozu Labs

4) Paul Nickerson

5) Jonas Sicking, Mozilla

6) Paul Nickerson and moz_bug_r_a4

7) Mikolaj J. Habryn

8) Masatoshi Kimura

9) moz_bug_r_a4

ORIGINAL ADVISORY:

1) http://www.mozilla.org/security/anno...sa2006-31.html

2) http://www.mozilla.org/security/anno...sa2006-32.html

3) http://www.mozilla.org/security/anno...sa2006-33.html

4) http://www.mozilla.org/security/anno...sa2006-34.html

5) http://www.mozilla.org/security/anno...sa2006-35.html

6) http://www.mozilla.org/security/anno...sa2006-37.html

7) http://www.mozilla.org/security/anno...sa2006-38.html

8) http://www.mozilla.org/security/anno...sa2006-42.html

9) http://www.mozilla.org/security/anno...sa2006-43.html

Please note: The information, which this Secunia Advisory is based upon, comes from third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.