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TITLE:
Mozilla Firefox / Thunderbird Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA45581

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45581/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45581

RELEASE DATE:
2011-08-20

DISCUSS ADVISORY:
http://secunia.com/advisories/45581/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/45581/

ONLY AVAILABLE IN CUSTOMER AREA:
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https://ca.secunia.com/?page=viewadvisory&vuln_id=45581

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Multiple vulnerabilities have been reported in Mozilla Firefox and
Thunderbird, which can be exploited by malicious people to bypass
certain security restrictions, disclose certain sensitive
information, and compromise a vulnerable system.

1) Some unspecified errors can be exploited to corrupt memory. No
further information is currently available.

2) An error in the handling of JAR file permissions can be exploited
to manipulate signed JAR files and execute arbitrary JavaScript code
in the context of another site.

NOTE: This vulnerability does not affect Mozilla Thunderbird.

3) An error within WebGL can be exploited to cause a heap-based
buffer overflow by passing an overly string to the ShaderSource
method.

4) An error within the shader pre-processor of WebGL's ANGLE library
can be exploited to cause a heap-based buffer overflow via programs
with a large amount of pre-processing elements.

5) A use-after-free error exists within the
"SVGTextElement.getCharNumAtPosition()" function when traversing the
SVG container hierarchy.

6) An error within Content Security Policy can lead to proxy
authorization credentials being leaked or hosts being resolved
incorrectly.

NOTE: This vulnerability does not affect Mozilla Thunderbird.

7) An error within Windows D2D hardware acceleration can be exploited
to bypass the same-origin policy and read data from a different
domain.

SOLUTION:
Upgrade to version 6.

PROVIDED AND/OR DISCOVERED BY:
3, 4) James Forshaw, Context Information Security Ltd
5) regenrecht via ZDI

The vendor credits:
1) Aral Yaman, Vivekanand Bolajwar, and Bert Hubert and Theo
Snelleman, Fox-IT
2) Rafael Gieschke
6) Mike Cardwell and Daniel Veditz
7) nasalislarvatus3000

ORIGINAL ADVISORY:
Mozilla (MFSA 2011-29, MFSA 2011-31):
http://www.mozilla.org/security/announce/2011/mfsa2011-29.html
http://www.mozilla.org/security/announce/2011/mfsa2011-31.html

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-11-270/

Context Information Security Ltd:
http://archives.neohapsis.com/archives/fulldisclosure/2011-08/0200.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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