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ZDI-06-011: Mozilla Firefox Table Rebuilding Code Execution Vulnerability
From: zdi-disclosures () 3com com
Date: Tue, 25 Apr 2006 22:00:11 -0700

ZDI-06-011: Mozilla Firefox Table Rebuilding Code Execution Vulnerability
April 25, 2006

-- CVE ID:

-- Affected Vendor:

-- Affected Products:
Firefox 1.5 -
Firefox 1.0 - 1.0.7
Thunderbird 1.5 -
Thunderbird 1.0 - 1.0.7
SeaMonkey 1.0
Mozilla Suite 1.7 - 1.7.12

-- Vulnerability Details:
This vulnerability allows attackers to execute arbitrary code on
vulnerable installations of the Mozilla/Firefox web browser and
Thunderbird e-mail client. User interaction is required to exploit this
vulnerability in that the target must visit a malicious page or open a
malicious e-mail.

The specific flaw exists within the routine RebuildConsideringRows()
during the rebuilding of nonsensical table tags. When the Mozilla
engine attempts to fix the malformed table, an attacker is capable of
triggering a memory corruption that can lead to code execution from
user-supplied data.

-- Vendor Response:
Mozilla has issued an update to correct this vulnerability. Further
details are available at:


-- Disclosure Timeline:
2006.02.28 - Vulnerability reported to vendor
2006.04.25 - Public release of advisory

-- Credit:
This vulnerability was discovered by an anonymous researcher.

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, a division of 3Com, The Zero Day Initiative
(ZDI) represents a best-of-breed model for rewarding security
researchers for responsibly disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:


The ZDI is unique in how the acquired vulnerability information is used.
3Com does not re-sell the vulnerability details or any exploit code.
Instead, upon notifying the affected product vendor, 3Com provides its
customers with zero day protection through its intrusion prevention
technology. Explicit details regarding the specifics of the
vulnerability are not exposed to any parties until an official vendor
patch is publicly available. Furthermore, with the altruistic aim of
helping to secure a broader user base, 3Com provides this vulnerability
information confidentially to security vendors (including competitors)
who have a vulnerability protection or mitigation product.

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