PT-2011-4441 · Microsoft · .Net Framework+1

Alexander Klink + 1 · Published 2011-12-29 · Updated 2023-12-07 · CVE-2011-3414

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Microsoft .NET Framework versions 1.1 SP1 through 4.0

Description A denial of service issue exists due to the way ASP.NET Framework handles specially crafted requests, causing a hash collision. This allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters. An attacker who successfully exploited this issue could send a small number of specially crafted requests to an ASP.NET server, causing performance to degrade significantly enough to cause a denial of service condition.

Recommendations For Microsoft .NET Framework versions 1.1 SP1 through 4.0, consider restricting the ability to trigger hash collisions predictably in the CaseInsensitiveHashProvider.getHashCode function as a temporary workaround until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-399

Related Identifiers

CVE-2011-3414

Affected Products

.Net Framework

Asp.Net

References · 10

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3414 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2011-3414 · Security Note
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-100 · Vendor Advisory
• http://us-cert.gov/cas/techalerts/TA11-347A.html · Note
• http://nruns.com/_downloads/advisory28122011.pdf · Note
• http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html · Note
• http://ocert.org/advisories/ocert-2011-003.html · Note
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14588 · Note
• http://kb.cert.org/vuls/id/903934 · Note
• http://technet.microsoft.com/en-us/security/bulletin/MS11-100 · Note