Title: Microsoft IIS 4.0/5.0 Malformed File Extension DoS Vulnerability
Severity: MODERATE
Description:
Sending a specially crafted URL containing malformed file extension information to Microsoft IIS 4.0/5.0 will consume CPU usage until it reaches 100% which will halt the program's services. Restarting the application or waiting until the URL is processed will be required in order to regain normal functionality.
Affected Products:
- Cisco Building Broadband Service Manager 5.0.0
- Cisco Call Manager 1.0.0
- Cisco Call Manager 2.0.0
- Cisco Call Manager 3.0.0
- 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 2.2.0
- Cisco Unity Server 2.3.0
- Cisco Unity Server 2.4.0
- 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 4.0.0alpha
- 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:
- Microsoft: Frequently Asked Questions: Microsoft Security Bulletin (MS00-030)
- Microsoft: Q260205: HTTP Request with a Large Number of Dots or Dot-Slashes Causes High CPU
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