HTTP: IIS .ida ISAPI Buffer Overflow
This signature detects attempts to exploit a known vulnerability against Microsoft ISAPI Indexing Service for IIS. Index Server 2.0 and Indexing Service 2000 in IIS 6.0 beta and earlier versions are vulnerable. Attackers can send a long argument to Internet Data Administration and Internet Data Query files to overflow the buffer in the ISAPI extension and execute arbitrary commands.
Extended Description
Windows Index Server ships with Windows NT 4.0 Option Pack; Windows Indexing Service ships with Windows 2000. An unchecked buffer resides in the 'idq.dll' ISAPI extension associated with each service. A maliciously crafted request could allow arbitrary code to run on the host in the Local System context. Note that Index Server and Indexing Service do not need to be running for an attacker to exploit this issue. Since 'idq.dll' is installed by default when IIS is installed, IIS would need to be the only service running. Note also that this vulnerability is currently being exploited by the 'Code Red' worm. In addition, all products that run affected versions of IIS are also vulnerable. **UPDATE**: An aggressive worm that actively exploits this vulnerability is believed to be in the wild.
Affected Products
Cisco ip/vc_3540_application_server,Cisco call_manager
Short Name
HTTP:IIS:ISAPI-IDA-OVERFLOW
Severity
Major
Recommended
False
Recommended Action
Drop
Category
HTTP
Keywords
.ida Buffer CVE-2001-0500 IIS ISAPI Overflow bid:2880
Release Date
04/22/2003
Supported Platforms
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vsrx-19.2
srx-19.3
srx-branch-12.3
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx-12.3
vmx-19.3
srx-12.3
Sigpack Version
3725
False Positive
Unknown
Vendors
Cisco
Microsoft
CVSS Score
10.0