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Mercury Mail Transport System SMTP AUTH CRAM-MD5 Buffer Overflow
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Secunia Advisory:
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SA26519
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Release Date:
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2007-08-20
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Last Update:
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2007-08-28
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Popularity:
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5,968 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Mercury Mail Transport System 4.x
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Binary Analysis:
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BA212 :: Available for 1 Credit 
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| CVE reference: | CVE-2007-4440
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Description:
eliteb0y has discovered a vulnerability in Mercury Mail Transport System, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to a boundary error within Mercury/32 SMTP Server Module (mercurys.dll) when processing arguments to the AUTH CRAM-MD5 command. This can be exploited to cause a stack-based buffer overflow via an overly long, specially-crafted argument passed to the affected command.
Successful exploitation allows execution of arbitrary code.
The vulnerability is confirmed in version 4.51. Other versions may also be affected.
Solution:
Update to version 4.52.
http://www.pmail.com/downloads.htm
Provided and/or discovered by:
eliteb0y
Changelog:
2007-08-22: Added CVE reference.
2007-08-28: Updated "Solution" section. Added vendor link.
Original Advisory:
Mercury:
http://www.pmail.com/m32_451.htm
http://lists.grok.org.uk/pipermail/full-disclosure/2007-August/065357.html
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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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