Title: Microsoft IIS Various Domain User Account Access Vulnerability
Severity: MODERATE
Description:
Microsoft IIS contains a flaw in the handling of FTP domain authentication.
If a user attempts to authenticate using a valid login name appended with specially chosen characters, the FTP service will not require the user to specify the domain which the account belongs. The service will instead search the domain and all trusted domains for the user account, if the account is enabled the user will have to complete authentication.
Once an attacker is aware of a valid user account, brute force techniques can be used to attempt access into the trusted domain.
Successful exploitation of this vulnerability will disclose environment information and username existance, both pieces of information could assist in further attacks against the host.
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 5.0
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Server
- Microsoft Windows NT 4.0 Option Pack
References:
- Microsoft: Microsoft Security Bulletin MS02-026
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