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Vulnerability Details : CVE-2009-1535

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.
Publish Date : 2009-06-10 Last Update Date : 2010-08-21
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- CVSS Scores & Vulnerability Types

CVSS Score
7.6
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity High (Specialized access conditions exist. It is hard to exploit and several special conditions must be satisfied to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 287

- Related OVAL Definitions

Title Definition Id Class Family
IIS 5.1 and 6.0 WebDAV Authentication Bypass Vulnerability oval:org.mitre.oval:def:6029 windows
MS09-020: Vulnerabilities in Internet Information Services (IIS) Could Allow Elevation of Privilege (970483) oval:gov.nist.fdcc.patch:def:11555 windows
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-1535

# Product Type Vendor Product Version Update Edition Language
1 Application Microsoft IIS 5.0 Version Details Vulnerabilities
2 Application Microsoft IIS 5.1 Version Details Vulnerabilities
3 Application Microsoft IIS 6.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Microsoft IIS 3

- References For CVE-2009-1535

http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0135.html
FULLDISC 20090515 IIS6 + webdav and unicode rides again in 2009
http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0139.html
FULLDISC 20090515 Re: IIS6 + webdav and unicode rides again in 2009
http://archives.neohapsis.com/archives/fulldisclosure/2009-05/att-0135/IIS_Advisory.pdf
http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0144.html
FULLDISC 20090515 Re: IIS6 + webdav and unicode rides again in 2009
http://blog.zoller.lu/2009/05/iis-6-webdac-auth-bypass-and-data.html
http://www.us-cert.gov/cas/techalerts/TA09-160A.html
CERT TA09-160A
http://technet.microsoft.com/en-us/security/bulletin/ms09-020
Microsoft Security Bulletin MS09-020 Vulnerabilities in Internet Information Services (IIS) Could Allow Elevation of Privilege (970483) This security update resolves one publicly disclosed vulnerability and one privately reported vulnerability in Microsoft Internet Information Services (IIS). The vulnerabilities could allow elevation of privilege if an attacker sent a specially crafted HTTP request to a Web site that requires authentication. These vulnerabilities allow an attacker to bypass the IIS configuration that specifies which type of authentication is allowed, but not the file system-based access control list (ACL) check that verifies whether a file is accessible by a given user. Successful exploitation of these vulnerabilities would still restrict the attacker to the permissions granted to the anonymous user account by the file system ACLs.
http://www.attrition.org/pipermail/vim/2009-June/002192.html
VIM 20090616 IIS WebDav Vulnerability CVE ID
http://view.samurajdata.se/psview.php?id=023287d6&page=1
http://isc.sans.org/diary.html?n&storyid=6397

- Metasploit Modules Related To CVE-2009-1535

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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