The CaseInsensitiveHashProvider.getHashCode function in the HashTable implementation in the ASP.NET subsystem in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5 SP1, 3.5.1, and 4.0 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters, aka Collisions in HashTable May Cause DoS Vulnerability.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Windows_7 | Microsoft | - (including) | - (including) |
| Windows_7 | Microsoft | –sp1 (including) | –sp1 (including) |
| Windows_server_2003 | Microsoft | * | * |
| Windows_server_2008 | Microsoft | * | * |
| Windows_server_2008 | Microsoft | –sp2 (including) | –sp2 (including) |
| Windows_server_2008 | Microsoft | r2 (including) | r2 (including) |
| Windows_vista | Microsoft | * | * |
| Windows_vista | Microsoft | –sp2 (including) | –sp2 (including) |
| Windows_xp | Microsoft | * | * |
| Windows_xp | Microsoft | sp3-unknown (including) | sp3-unknown (including) |
References
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
- http://www.kb.cert.org/vuls/id/903934
- http://www.nruns.com/_downloads/advisory28122011.pdf
- http://www.ocert.org/advisories/ocert-2011-003.html
- http://www.us-cert.gov/cas/techalerts/TA11-347A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-100
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14588
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
- http://www.kb.cert.org/vuls/id/903934
- http://www.nruns.com/_downloads/advisory28122011.pdf
- http://www.ocert.org/advisories/ocert-2011-003.html
- http://www.us-cert.gov/cas/techalerts/TA11-347A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-100
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14588