| GEN:SID | 1:973 |
| Message | WEB-IIS *.idc attempt |
| Summary | This event is generated when an attempt is made to exploit a buffer overflow associated with a file with a .idc extension.
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| Impact | Remote access. This attack may permit the execution of arbitrary commands on the victim server.
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| Detailed Information | Microsoft Internet Information Service (IIS) supports files extensions including .idc that call the ISM.DLL. A buffer overflow vulnerability exists in ISM.DLL code when it receives a malformed request, permitting the execution of arbitrary code.
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| Affected Systems | IIS 4.0 hosts
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| Attack Scenarios | An attacker can send a malformed request of a .idc file that causes a buffer overflow.
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| Ease of Attack | Simple. Exploit code is freely available.
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| Corrective Action | Upgrade to a more current version of IIS. |
| Additional References | CVE http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-1999-0874
Bugtraq: http://www.securityfocus.com/bid/307
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| Rule References | bugtraq: 1448
cve: 1999-0874
cve: 2000-0661
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