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Microsoft Exchange SMTP Service Extended Verb Request Buffer Overflow
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Secunia Advisory:
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SA14920
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Release Date:
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2005-04-12
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Last Update:
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2005-04-20
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Popularity:
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14,517 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: | Microsoft Exchange Server 2000
Microsoft Exchange Server 2003
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
ISS X-Force has reported a vulnerability in Microsoft Exchange Server, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to a boundary error in the "SvrAppendReceivedChunk()" function in "xlsasink.dll" when processing X-LINK2STATE extended verb requests. This can be exploited to cause a heap-based buffer overflow by connecting to the SMTP service and issuing a specially crafted command.
Successful exploitation allows execution of arbitrary code with the privileges of the SMTP service (by default "Local System").
Exploit code is publicly available.
NOTE: On Exchange Server 2003, unauthorised users are not able to execute the affected command. Instead, this requires permissions usually only granted to other Exchange servers in a domain.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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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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