HTTP: Microsoft Phone Book Service Buffer Overflow

This signature detects attempts to exploit a known vulnerability in the Microsoft Internet Information Services (IIS) Phone Book Service. A successful attack can lead to a buffer overflow and arbitrary remote code execution within the context of the user. This is typically an IUSR or IWAM user with limited privileges.

Extended Description

The Phone Book Service is an optional component that ships with the NT 4 Option Pack and Windows 2000. It is not installed by default. A buffer overflow vulnerability was discovered in the URL processing routines of the Phone Book Service requests on IIS 4 and IIS 5. If exploited, this vulnerability allows an attacker to execute arbitrary code and obtain a remote command shell with those privileges of the IUSR_machinename account (IIS 4) or the IWAM_machinename account (IIS 5).

Affected Products

Microsoft windows_2000_advanced_server

References

BugTraq: 2048

CVE: CVE-2000-1089

URL: http://www.stake.com/research/advisories/2000/a120400-1.txt http://www.microsoft.com/technet/security/bulletin/MS00-094.asp

Short Name

HTTP:IIS:PBSERVER-PARAM-OF

Severity

Major

Recommended

False

Recommended Action

Drop

HTTP: Microsoft Phone Book Service Buffer Overflow

Extended Description

Affected Products

References

Found a potential security threat?