Title: Microsoft IIS Chunked Encoding Heap Overflow Variant Vulnerability
Severity: CRITICAL
Description:
A heap overflow condition in the 'chunked encoding transfer mechanism' related to Active Server Pages has been reported for Microsoft IIS (Internet Information Services).
Web clients may send data to ASP (Active Server Pages) scripts in variable sized chunks. This is part of the HTTP protocol specification and is known as a chunked encoding tansfer. The chunked encoding transfer mechanism must allocate a buffer in order to handle the transfer.
There is a lack of sufficient bounds checking on this buffer, which is dynamically allocated by the ISAPI extension that handles ASP scripting. This result is a remotely exploitable heap overflow.
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.
This vulnerability is a variant of that discussed in BID 4485 "Microsoft IIS Chunked Encoding Transfer Heap Overflow Vulnerability".
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.
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 IIS 5.1.0
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Server
- Microsoft Windows NT 4.0 Option Pack
- Microsoft Windows XP 64-bit Edition
- Microsoft Windows XP 64-bit Edition SP1
- Microsoft Windows XP Professional
- Microsoft Windows XP Professional SP1
References:
- CERT/CC: Vulnerability Note VU#669779
- Microsoft: Microsoft Security Bulletin MS02-018
- Microsoft: Q317636 Windows NT Server 4.0, Terminal Server Edition, Security Rollup Package
- Microsoft: Technet Security
- SecurityFocus: BID 4485: Microsoft IIS Chunked Encoding Transfer Heap Overflow Vulnerability
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