CVE-2009-0033
NoneCVSS
—
EPSS
10.1%
Published
Jun 5, 2009
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Maven | org.apache.tomcat:tomcat | 4.1.0 | No fix |
| Maven | org.apache.tomcat:tomcat | 5.5.0 | No fix |
| Maven | org.apache.tomcat:tomcat | 6.0.0 | No fix |
| Debian:5.0 | tomcat5.5 | 0 | 5.5.26-5lenny2 |
| Red Hat:certificate_system:7.3 | ant | 0 | 0:1.6.5-1jpp_1rh |
| Red Hat:certificate_system:7.3 | avalon-logkit | 0 | 0:1.2-2jpp_4rh |
| Red Hat:certificate_system:7.3 | axis | 0 | 0:1.2.1-1jpp_3rh |
| Red Hat:certificate_system:7.3 | classpathx-jaf | 0 | 0:1.0-2jpp_6rh |
| Red Hat:certificate_system:7.3 | classpathx-mail | 0 | 0:1.1.1-2jpp_8rh |
| Red Hat:certificate_system:7.3 | geronimo-ejb-2.1-api | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-j2ee-1.4-apis | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-j2ee-connector-1.5-api | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-j2ee-deployment-1.1-api | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-j2ee-management-1.0-api | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-jms-1.1-api | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-jsp-2.0-api | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-jta-1.0.1B-api | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-servlet-2.4-api | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-specs | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-specs-javadoc | 0 | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | jakarta-commons-modeler | 0 | 0:2.0-3jpp_2rh |
| Red Hat:certificate_system:7.3 | log4j | 0 | 0:1.2.12-1jpp_1rh |
| Red Hat:certificate_system:7.3 | mx4j | 0 | 1:3.0.1-1jpp_4rh |
| Red Hat:certificate_system:7.3 | pcsc-lite | 0 | 0:1.3.3-3.el4 |
| Red Hat:certificate_system:7.3 | pcsc-lite-debuginfo | 0 | 0:1.3.3-3.el4 |
| Red Hat:certificate_system:7.3 | pcsc-lite-doc | 0 | 0:1.3.3-3.el4 |
| Red Hat:certificate_system:7.3 | pcsc-lite-libs | 0 | 0:1.3.3-3.el4 |
| Red Hat:certificate_system:7.3 | rhpki-ca | 0 | 0:7.3.0-20.el4 |
| Red Hat:certificate_system:7.3 | rhpki-java-tools | 0 | 0:7.3.0-10.el4 |
| Red Hat:certificate_system:7.3 | rhpki-kra | 0 | 0:7.3.0-14.el4 |
| Red Hat:certificate_system:7.3 | rhpki-manage | 0 | 0:7.3.0-19.el4 |
| Red Hat:certificate_system:7.3 | rhpki-native-tools | 0 | 0:7.3.0-6.el4 |
| Red Hat:certificate_system:7.3 | rhpki-ocsp | 0 | 0:7.3.0-13.el4 |
| Red Hat:certificate_system:7.3 | rhpki-tks | 0 | 0:7.3.0-13.el4 |
| Red Hat:certificate_system:7.3 | tomcat5 | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:certificate_system:7.3 | tomcat5-common-lib | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:certificate_system:7.3 | tomcat5-jasper | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:certificate_system:7.3 | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:certificate_system:7.3 | tomcat5-server-lib | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:certificate_system:7.3 | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:certificate_system:7.3 | xerces-j2 | 0 | 0:2.7.1-1jpp_1rh |
| Red Hat:certificate_system:7.3 | xml-commons | 0 | 0:1.3.02-2jpp_1rh |
| Red Hat:certificate_system:7.3 | xml-commons-apis | 0 | 0:1.3.02-2jpp_1rh |
| Red Hat:enterprise_linux:5::client | tomcat5 | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-admin-webapps | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-common-lib | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-debuginfo | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-jasper | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-jasper-javadoc | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-jsp-2.0-api-javadoc | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-server-lib | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-servlet-2.4-api-javadoc | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client | tomcat5-webapps | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5 | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-admin-webapps | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-common-lib | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-debuginfo | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-jasper | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-jasper-javadoc | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-jsp-2.0-api-javadoc | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-server-lib | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-servlet-2.4-api-javadoc | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::client_workstation | tomcat5-webapps | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5 | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-admin-webapps | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-common-lib | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-debuginfo | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-jasper | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-jasper-javadoc | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-jsp-2.0-api-javadoc | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-server-lib | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-servlet-2.4-api-javadoc | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:enterprise_linux:5::server | tomcat5-webapps | 0 | 0:5.5.23-0jpp.7.el5_3.2 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5 | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-admin-webapps | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-common-lib | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-jasper | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-jasper-javadoc | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-jsp-2.0-api-javadoc | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-server-lib | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-servlet-2.4-api-javadoc | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat5-webapps | 0 | 0:5.5.23-1.patch07.19.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6 | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6-admin-webapps | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6-docs-webapp | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6-el-1.0-api | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6-javadoc | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6-jsp-2.1-api | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6-lib | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6-log4j | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6-servlet-2.5-api | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el4 | tomcat6-webapps | 0 | 0:6.0.18-11.3.ep5.el4 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5 | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-admin-webapps | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-common-lib | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-jasper | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-jasper-javadoc | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-jsp-2.0-api-javadoc | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-server-lib | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-servlet-2.4-api-javadoc | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat5-webapps | 0 | 0:5.5.23-0jpp.9.6.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6 | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6-admin-webapps | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6-docs-webapp | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6-el-1.0-api | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6-javadoc | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6-jsp-2.1-api | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6-lib | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6-log4j | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6-servlet-2.5-api | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:jboss_enterprise_web_server:1::el5 | tomcat6-webapps | 0 | 0:6.0.18-12.0.ep5.el5 |
| Red Hat:network_satellite:5.1::el4 | tomcat5 | 0 | 0:5.0.30-0jpp_16rh |
| Red Hat:network_satellite:5.2::el4 | tomcat5 | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.2::el4 | tomcat5-common-lib | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.2::el4 | tomcat5-jasper | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.2::el4 | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.2::el4 | tomcat5-server-lib | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.2::el4 | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.3::el4 | tomcat5 | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.3::el4 | tomcat5-common-lib | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.3::el4 | tomcat5-jasper | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.3::el4 | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.3::el4 | tomcat5-server-lib | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:network_satellite:5.3::el4 | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:rhel_application_server:2 | tomcat5 | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-admin-webapps | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-common-lib | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-jasper | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-jasper-javadoc | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-jsp-2.0-api-javadoc | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-server-lib | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-servlet-2.4-api-javadoc | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_application_server:2 | tomcat5-webapps | 0 | 0:5.5.23-0jpp_4rh.16 |
| Red Hat:rhel_developer_suite:3 | tomcat5 | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:rhel_developer_suite:3 | tomcat5-common-lib | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:rhel_developer_suite:3 | tomcat5-jasper | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:rhel_developer_suite:3 | tomcat5-jsp-2.0-api | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:rhel_developer_suite:3 | tomcat5-server-lib | 0 | 0:5.5.23-0jpp_18rh |
| Red Hat:rhel_developer_suite:3 | tomcat5-servlet-2.4-api | 0 | 0:5.5.23-0jpp_18rh |
| maven | org.apache.tomcat/tomcat | 4.1.0 | No fix |
| maven | org.apache.tomcat/tomcat | 5.5.0 | No fix |
| maven | org.apache.tomcat/tomcat | 6.0.0 | No fix |
Related vulnerabilities
- CVE-2026-24733 Improper Input Validation vulnerability in Apache Tomcat. Also affects org.apache.tomcat:tomcat
- CVE-2025-66614 Improper Input Validation vulnerability. Also affects org.apache.tomcat:tomcat
- GHSA-wmwf-9ccg-fff5 Apache Tomcat Vulnerable to Relative Path Traversal Also affects org.apache.tomcat:tomcat
- GHSA-vfww-5hm6-hx2j Apache Tomcat Vulnerable to Improper Neutralization of Escape, Meta, or Control Sequences Also affects org.apache.tomcat:tomcat
- CVE-2025-61795 Improper Resource Shutdown or Release vulnerability in Apache Tomcat. Also affects org.apache.tomcat:tomcat
- CVE-2025-55752 Relative Path Traversal vulnerability in Apache Tomcat. Also affects org.apache.tomcat:tomcat
- CVE-2025-55754 Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache… Also affects org.apache.tomcat:tomcat
- CVE-2025-49124 Untrusted Search Path vulnerability in Apache Tomcat installer for Windows. Also affects org.apache.tomcat:tomcat