SNS Advisory No.35
TrendMicro InterScan VirusWall 3.51 HttpSaveC*P.dll Buffer Overflow
Problem first discovered: Wed, 6 Jun 2001
Published: Thu, 28 Jun 2001
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Overview:
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A buffer overflow vulnerability was found in some administrative programs,
smtpscan.dll, of InterScan VirusWall for Windows NT. It allows a remote
user to execute an arbitrary command with SYSTEM privilege.
If long strings are included in a certain parameter of configuration by
exploiting the vulnerability that was reported by SNS Advisory No.28,
a buffer overflow occurs when requesting the following dll(s):
http://server/interscan/cgi-bin/HttpSaveCVP.dll
http://server/interscan/cgi-bin/HttpSaveCSP.dll
The following are a memory dump and contents of register when a buffer
overflow occurs.
dump:
023FFAC2 6D 6D 6D 6E 6E 6E mmmnnn
023FFAC8 6F 6F 6F 70 70 70 oooppp
register:
EAX = 023FFAC8 EIP = 6E6E6E6D
Therefore, arbitrary code may be executed by calling eax which may be
replaced by an attacker's supplied arbitrary code.
Tested Version:
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InterScan VirusWall for Windows NT 3.51 build 1321 English
Tested OS:
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Windows NT 4.0 Server SP6a [English Version]
Patch Information:
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To get the patch, send e-mail to supportat_private or
search this issue on
http://solutionbank.antivirus.com/solutions/solutionSearch.asp
Discovered by:
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Nobuo Miwa (LAC / n-miwaat_private)
Disclaimer:
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All information in these advisories are subject to change without any
advanced notices neither mutual consensus, and each of them is released
as it is. LAC Co.,Ltd. is not responsible for any risks of occurrences
caused by applying those information.
References
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Archive of this advisory:
http://www.lac.co.jp/security/english/snsadv_e/35_e.html
SNS Advisory No.28(TrendMicro InterScan VirusWall for NT remote
configuration Vulnerability)
http://www.lac.co.jp/security/english/snsadv_e/28_e.html
SNS Advisory:
http://www.lac.co.jp/security/english/snsadv_e/
LAC:
http://www.lac.co.jp/security/english/
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Secure Net Service(SNS) Security Advisory <snsadvat_private>
Computer Security Laboratory, LAC http://www.lac.co.jp/security/
This archive was generated by hypermail 2b30 : Thu Jun 28 2001 - 12:21:56 PDT