Title: Microsoft IIS 4.0 Chunked Transfer Encoding Buffer Overflow Vulnerability
Severity: MODERATE
Description:
Due to unchecked buffer code that handles chunked encoding transfers, remote users are able to consume CPU cycles in Microsoft IIS until the program is rendered completely unstable and eventually crash. The remote user can request a POST or PUT command using chunked transfer encoding compromised of a large buffer without actually filling it. This can cause the server to hang indefinitely until the remote user cancels the session or until the IIS service is stopped and restarted.
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 Windows NT 4.0 Option Pack
References:
- Microsoft: Frequently Asked Questions: Microsoft Security Bulletin (MS00-018)
- Microsoft: Q252693: Chunked Encoding Request with No Data Causes IIS Memory Leak
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