Title: Microsoft IIS HTR ISAPI Extension Buffer Overflow Vulnerability
Severity: CRITICAL
Description:
A buffer overflow in the HTR ISAPI extension has been reported for Microsoft IIS (Internet Information Services).
HTR is a scripting technology for IIS that has been largely superseded by ASP (Active Server Pages). A condition exists in the HTR ISAPI extension that may enable a remote attacker to send a number of malformed requests which are capable of overwriting locations in memory with attacker-supplied data.
This condition affects IIS 4.0, IIS 5.0 and may be effectively mitigated by disabling the extension.
Exploitation of this vulnerability may result in a denial of service or allow for a remote attacker to execute arbitrary instructions on the victim host.
It is important to note that this BugTraq ID is an individual vulnerability entry to followup the aggregated Multiple Remote IIS Vulnerabilities alert released by SecurityFocus.
A number of Cisco products are affected by this vulnerability, although this issue is not present in the Cisco products themselves.
Affected Products:
- Cisco Building Broadband Service Manager 4.0.1
- Cisco Building Broadband Service Manager 4.2.0
- Cisco Building Broadband Service Manager 4.3.0
- Cisco Building Broadband Service Manager 4.4.0
- Cisco Building Broadband Service Manager 4.5.0
- Cisco Building Broadband Service Manager 5.0.0
- Cisco Building Broadband Service Manager 5.1.0
- Cisco Call Manager 1.0.0
- Cisco Call Manager 2.0.0
- Cisco Call Manager 3.0.0
- Cisco Call Manager 3.1.0
- Cisco Call Manager 3.2.0
- Cisco ICS 7750 0.0.0
- Cisco IP/VC 3540 Video Rate Matching Module 0.0.0
- Cisco Unity Server 2.0.0
- Cisco Unity Server 2.1.0
- Cisco Unity Server 2.2.0
- Cisco Unity Server 2.3.0
- Cisco Unity Server 2.4.0
- Cisco VoIP Phone 7902G
- Cisco VoIP Phone 7905G
- Cisco VoIP Phone 7912G
- Cisco uOne 1.0.0
- Cisco uOne 2.0.0
- Cisco uOne 3.0.0
- Cisco uOne 4.0.0
- Microsoft BackOffice 4.0.0
- Microsoft BackOffice 4.5.0
- Microsoft IIS 4.0.0
- Microsoft IIS 5.0
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Server
- Microsoft Windows NT 4.0 Option Pack
References:
- CERT/CC: Vulnerability Note VU#363715
- Microsoft: Microsoft Security Bulletin MS02-018
- Microsoft: Q317636 Windows NT Server 4.0, Terminal Server Edition, Security Rollup Package
- Microsoft: Technet Security
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