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TITLE:
Mozilla Security Bypass and Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA14684

VERIFY ADVISORY:
http://secunia.com/advisories/14684/

CRITICAL:
Highly critical

IMPACT:
Security Bypass, System access

WHERE:
>From remote

SOFTWARE:
Mozilla 0.x
http://secunia.com/product/772/
Mozilla 1.0
http://secunia.com/product/97/
Mozilla 1.1
http://secunia.com/product/98/
Mozilla 1.2
http://secunia.com/product/3100/
Mozilla 1.3
http://secunia.com/product/1480/
Mozilla 1.4
http://secunia.com/product/1481/
Mozilla 1.5
http://secunia.com/product/2478/
Mozilla 1.6
http://secunia.com/product/3101/
Mozilla 1.7.x
http://secunia.com/product/3691/

DESCRIPTION:
Two vulnerabilities have been reported in Mozilla, which can be
exploited by malicious people to bypass certain security restrictions
and compromise a user's system.

1) An error in the restriction of privileged XUL files can e.g. be
exploited to open a local privileged XUL file by tricking a user into
dragging a faked scrollbar.

The vulnerability itself does not pose any direct security risk as no
XUL files in the product use external parameters in an insecure way
nor do any destructive actions when being opened.

2) A boundary error in the GIF image processing of Netscape extension
2 blocks can be exploited to cause a heap-based buffer overflow via a
specially crafted image.

Successful exploitation may allow execution of arbitrary code.

The vulnerabilities have been reported in versions prior to 1.7.6.

SOLUTION:
Update to version 1.7.6.
http://www.mozilla.org/products/mozilla1.x/

PROVIDED AND/OR DISCOVERED BY:
1) Michael Krax
2) Mark Dowd, ISS X-Force

ORIGINAL ADVISORY:
1) Mozilla:
http://www.mozilla.org/security/announce/mfsa2005-32.html

2) Mozilla:
http://www.mozilla.org/security/announce/mfsa2005-30.html

ISS:
http://xforce.iss.net/xforce/alerts/id/191

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About:
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everybody keeping their systems up to date against the latest
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http://secunia.com/about_secunia_advisories/


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