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…
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EPSS puts the probability of exploitation in the next 30 days at 98.1%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 98.11% probability · 100th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- microsoft/internet information services
- Source
- secure@microsoft.com
References
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0135.htmlBroken Link
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0139.htmlBroken Link
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0144.htmlBroken Link
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/att-0135/IIS_Advisory.pdfBroken Link
- http://blog.zoller.lu/2009/05/iis-6-webdac-auth-bypass-and-data.htmlThird Party Advisory
- http://isc.sans.org/diary.html?n&storyid=6397Third Party Advisory
- http://view.samurajdata.se/psview.php?id=023287d6&page=1Broken Link
- http://www.attrition.org/pipermail/vim/2009-June/002192.htmlThird Party Advisory
- http://www.us-cert.gov/cas/techalerts/TA09-160A.htmlThird Party Advisory, US Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-020Patch, Vendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6029Third Party Advisory
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0135.htmlBroken Link
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0139.htmlBroken Link
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0144.htmlBroken Link
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/att-0135/IIS_Advisory.pdfBroken Link
- http://blog.zoller.lu/2009/05/iis-6-webdac-auth-bypass-and-data.htmlThird Party Advisory
- http://isc.sans.org/diary.html?n&storyid=6397Third Party Advisory
- http://view.samurajdata.se/psview.php?id=023287d6&page=1Broken Link
- http://www.attrition.org/pipermail/vim/2009-June/002192.htmlThird Party Advisory
- http://www.us-cert.gov/cas/techalerts/TA09-160A.htmlThird Party Advisory, US Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-020Patch, Vendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6029Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.