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CMailServer "MAIL FROM:" and "RCPT TO:" Buffer Overflows
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Secunia Advisory:
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SA8761
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Release Date:
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2003-05-12
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Popularity:
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5,008 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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Vendor Patch
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| Software: | CMailServer 4.x
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Description:
Two vulnerabilities have been identified in CMailServer, which can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable server.
The vulnerabilities are caused due to boundary errors in the handling of the "MAIL FROM:" and "RCPT TO:" commands. A malicious person can exploit this by supplying a long, specially crafted argument to the vulnerable commands, which will result in a buffer overflow.
Successful exploitation will potentially allow execution of arbitrary code with SYSTEM privileges.
Solution:
Update to version 4.0.2003.03.30 or later:
http://www.youngzsoft.net/cmailserver/cmailsetup.exe
Provided and/or discovered by:
Dennis Rand, Infowarfare.dk.
Original Advisory:
http://www.infowarfare.dk/Advisories/iw-17-advisory.txt
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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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