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Highly critical

Metamail Message Parsing System Compromise Vulnerabilities

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Release Date:  2004-02-18    Last Update:  2004-02-25    Views:  17,370

Secunia Advisory SA10908

Where:

From remote

Impact:

System access

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


Ulf Härnhammar has discovered some vulnerabilities in Metamail, which can be exploited by malicious people to compromise a user's system.

The vulnerabilities are caused due to various boundary and format string errors when parsing messages and can be exploited when a user opens a specially crafted message.

1) A format string error in the "SaveSquirrelFile()" function can be exploited by sending a specially crafted message containing a "multipart/alternative" media type and format specifiers in the "Content-Type" header.

2) A format string error in the "PrintHeader()" function when handling messages containing certain encoded characters in mail headers can be exploited by including format specifiers.

3) A boundary error in the "PrintHeader()" function during handling of messages containing encoded non-ASCII characters in mail headers can be exploited to cause a buffer overflow by including an overly long string as character set.

4) A boundary error in the "ShareThisHeader()" function in splitmail can be exploited via a specially crafted message containing an overly long "Subject" header.

Successful exploitation allows execution of arbitrary code on a user's system.

The vulnerabilities affect version 2.7 and prior.


Solution:
Use another product.

Provided and/or discovered by:
Ulf Härnhammar

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: Metamail Message Parsing System Compromise Vulnerabilities

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