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

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CVE-2009-0033

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
05/06/2009
Last modified:
09/04/2025

Description

Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18, when the Java AJP connector and mod_jk load balancing are used, allows remote attackers to cause a denial of service (application outage) via a crafted request with invalid headers, related to temporary blocking of connectors that have encountered errors, as demonstrated by an error involving a malformed HTTP Host header.

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:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.3:beta:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.4:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.5:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.6:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.7:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.8:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.9:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.9:beta:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.10:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.11:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:4.1.12:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools