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Mozilla Foundation Security Advisory 2008-07

by Donna Buenaventura / February 19, 2008 8:49 PM PST

Title: Possible information disclosure in BMP decoder
Impact: Moderate
Announced: February 19, 2008
Reporter: Gynvael Coldwind // Vexillium
Products: Firefox, Thunderbird, SeaMonkey
Fixed in:
Firefox 2.0.0.12
Thunderbird 2.0.0.12
SeaMonkey 1.1.8

Description

Security researcher Gynvael Coldwind of Vexillium (crediting help from udevd and porneL) demonstrated that BMP images could be used to reveal small chunks of uninitialized memory that might contain sensitive data from other pages or other programs, and that this data could be extracted from the image using methods associated with the <canvas> feature.

Note: Because this flaw also affected products from other vendors disclosure was delayed until they could release a fix.

Workaround
Disable JavaScript until a version containing these fixes can be installed.

http://www.mozilla.org/security/announce/2008/mfsa2008-07.html

Note: The above is the 11th Security Advisory by Mozilla for this year 2008.

MFSA 2008-11 Web forgery overwrite with div overlay
MFSA 2008-10 URL token stealing via stylesheet redirect
MFSA 2008-09 Mishandling of locally-saved plain text files
MFSA 2008-08 File action dialog tampering
MFSA 2008-07 Possible information disclosure in BMP decoder
MFSA 2008-06 Web browsing history and forward navigation stealing
MFSA 2008-05 Directory traversal via chrome: URI
MFSA 2008-04 Stored password corruption
MFSA 2008-03 Privilege escalation, XSS, Remote Code Execution
MFSA 2008-02 Multiple file input focus stealing vulnerabilities
MFSA 2008-01 Crashes with evidence of memory corruption (rv:1.8.1.12)

Advisory details at http://www.mozilla.org/projects/security/known-vulnerabilities.html

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