Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2011-4858

Severity CVSS v4.0:
Pending analysis
Type:
CWE-399 Resource Management Errors
Publication date:
05/01/2012
Last modified:
11/04/2025

Description

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.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:apache:tomcat:5.5.35:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.4:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.5:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.6:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.7:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.8:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.9:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.10:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.11:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.12:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.13:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools