Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2009-1535

Severity CVSS v4.0:
Pending analysis
Type:
CWE-287 Authentication Issues
Publication date:
10/06/2009
Last modified:
09/04/2025

Description

The WebDAV extension in Microsoft Internet Information Services (IIS) 5.1 and 6.0 allows remote attackers to bypass URI-based protection mechanisms, and list folders or read, create, or modify files, via a %c0%af (Unicode / character) at an arbitrary position in the URI, as demonstrated by inserting %c0%af into a "/protected/" initial pathname component to bypass the password protection on the protected\ folder, aka "IIS 5.1 and 6.0 WebDAV Authentication Bypass Vulnerability," a different vulnerability than CVE-2009-1122.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:microsoft:internet_information_services:5.1:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:-:*
cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:professional:*:-:*
cpe:2.3:a:microsoft:internet_information_services:6.0:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:itanium:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:x64:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools