National Cyber-Alert System
Vulnerability Summary for CVE-2009-1535
Original release date:06/10/2009
Last revised:06/19/2009
Source:
US-CERT/NIST
Overview
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
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.
External Source: MS
Name: MS09-020
External Source: VIM
Name: 20090616 IIS WebDav Vulnerability CVE ID
External Source: MISC
Name: http://view.samurajdata.se/psview.php?id=023287d6&page=1
External Source: MISC
Name: http://isc.sans.org/diary.html?n&storyid=6397
External Source: MISC
Name: http://blog.zoller.lu/2009/05/iis-6-webdac-auth-bypass-and-data.html
External Source: MISC
Name: http://archives.neohapsis.com/archives/fulldisclosure/2009-05/att-0135/IIS_Advisory.pdf
External Source: FULLDISC
Name: 20090515 Re: IIS6 + webdav and unicode rides again in 2009
External Source: FULLDISC
Name: 20090515 Re: IIS6 + webdav and unicode rides again in 2009
External Source: FULLDISC
Name: 20090515 IIS6 + webdav and unicode rides again in 2009