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Mercur Messaging IMAP NTLM Authentication Processing Vulnerabilities
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Secunia Advisory:
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SA24596
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Release Date:
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2007-03-21
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Last Update:
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2007-11-22
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Popularity:
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5,759 views
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Critical:
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Highly critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | Mercur Messaging 2005
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Binary Analysis:
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BA66 :: Available for 1 Credit 
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| CVE reference: | CVE-2007-1578
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Description:
mu-b has discovered some vulnerabilities in Mercur Messaging 2005, which can be exploited by malicious people to cause a DoS (Denial of Service) or to compromise a vulnerable system.
The vulnerabilities are caused due to errors within the IMAP service (MCRIMAP4.EXE) when processing NTLM authentication data. These can be exploited to crash the service or to cause stack-based buffer overflows via a specially crafted NTLM Type3 message.
Successful exploitation allows execution of arbitrary code.
The vulnerabilities are confirmed in version 2005 SP4 (File version 5.0.15.0). Other versions may also be affected.
Solution:
Restrict access to the IMAP service.
Provided and/or discovered by:
mu-b
Changelog:
2007-03-25: Increased criticality level and modified "Title" and "Description" sections based on additional information from Secunia Research.
2007-03-26: Added CVE reference.
2007-11-22: Updated link in "Original Advisory" section.
Original Advisory:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-March/053080.html
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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