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Insecure Library Loading
Moderately critical

Mozilla / Thunderbird "MSG_UnEscapeSearchUrl()" Buffer Overflow

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Release Date:  2004-12-30    Last Update:  2005-01-31    Views:  27,124

Secunia Advisory SA13687

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Maurycy Prodeus has reported a vulnerability in Mozilla and Thunderbird, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a user's system.

The vulnerability is caused due to a boundary error in the "MSG_UnEscapeSearchUrl()" function in "nsNNTPProtocol.cpp" when processing NNTP URIs. This can be exploited via e.g. a malicious web site to cause a heap-based buffer overflow when referencing a specially crafted, overly long "news://" URI.

Successful exploitation crashes the application, but may potentially allow execution of arbitrary code.

The vulnerability has been reported in Mozilla 1.7.3 and prior, and releases prior to Thunderbird 0.9.


Solution:
Update to Mozilla 1.7.5.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Maurycy Prodeus, iSEC Security Research.

Original Advisory:
Mozilla:
https://bugzilla.mozilla.org/show_bug.cgi?id=264388

iSEC Security Research:
http://www.isec.pl/vulnerabilities/isec-0020-mozilla.txt

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Mozilla / Thunderbird "MSG_UnEscapeSearchUrl()" Buffer Overflow

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