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CVE-2011-4858

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Date: January 5, 2012

Apache Tomcat before 5.5.35, 6.x before 6.0.35, and 7.x before 7.0.23 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.

Language: Java

Severity Score

Severity Score

Weakness Type (CWE)

Resource Management Errors

CWE-399

Top Fix

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Upgrade Version

Upgrade to version org.apache.tomcat:catalina:6.0.35,org.apache.tomcat:tomcat-coyote:7.0.23,org.apache.tomcat:tomcat-catalina:7.0.23,org.apache.tomcat.embed:tomcat-embed-core:7.0.23

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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