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CVE-2009-0033

5.0 · MEDIUM

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 serv…

Published Jun 5, 2009apacheCWE-20EPSS 10.05%

Overview

CVE-2009-0033 is a medium-severity vulnerability affecting apache tomcat. It was published on June 5, 2009 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from apache. Update tomcat to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refjvn.jp/en/jp/JVN87272440/index.htmlReflists.apple.com/archives/security-announce/2010//Mar/msg00001.htmlReflists.opensuse.org/opensuse-security-announce/2009-07/msg00002.htmlRefmarc.info/?l=bugtraq&m=127420533226623&w=2Refmarc.info/?l=bugtraq&m=129070310906557&w=2Refmarc.info/?l=bugtraq&m=133469267822771&w=2Refmarc.info/?l=bugtraq&m=136485229118404&w=2Refsecunia.com/advisories/35326Refsecunia.com/advisories/35344Refsecunia.com/advisories/35685

How CyberStrike helps

Frequently asked questions

What is CVE-2009-0033?

CVE-2009-0033 is a medium-severity vulnerability affecting apache tomcat. It was published on June 5, 2009 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2009-0033?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-0033?

Check the references section for vendor advisories and patches from apache. Update tomcat to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-0033?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-0033 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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