medium
5
CWE
20 400
Advisory Published
Advisory Published
Updated

CVE-2009-0033: Input Validation

First published: Fri Jun 05 2009(Updated: )

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.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
maven/org.apache.tomcat:tomcat>=6.0.0<=6.0.18
maven/org.apache.tomcat:tomcat>=5.5.0<=5.5.27
maven/org.apache.tomcat:tomcat>=4.1.0<=4.1.39
Tomcat=4.1.0
Tomcat=4.1.1
Tomcat=4.1.2
Tomcat=4.1.3
Tomcat=4.1.3-beta
Tomcat=4.1.4
Tomcat=4.1.5
Tomcat=4.1.6
Tomcat=4.1.7
Tomcat=4.1.8
Tomcat=4.1.9
Tomcat=4.1.9-beta
Tomcat=4.1.10
Tomcat=4.1.11
Tomcat=4.1.12
Tomcat=4.1.13
Tomcat=4.1.14
Tomcat=4.1.15
Tomcat=4.1.16
Tomcat=4.1.17
Tomcat=4.1.18
Tomcat=4.1.19
Tomcat=4.1.20
Tomcat=4.1.21
Tomcat=4.1.22
Tomcat=4.1.23
Tomcat=4.1.24
Tomcat=4.1.25
Tomcat=4.1.26
Tomcat=4.1.27
Tomcat=4.1.28
Tomcat=4.1.29
Tomcat=4.1.30
Tomcat=4.1.31
Tomcat=4.1.32
Tomcat=4.1.33
Tomcat=4.1.34
Tomcat=4.1.35
Tomcat=4.1.36
Tomcat=4.1.37
Tomcat=4.1.38
Tomcat=4.1.39
Tomcat=5.5.0
Tomcat=5.5.1
Tomcat=5.5.2
Tomcat=5.5.3
Tomcat=5.5.4
Tomcat=5.5.5
Tomcat=5.5.6
Tomcat=5.5.7
Tomcat=5.5.8
Tomcat=5.5.9
Tomcat=5.5.10
Tomcat=5.5.11
Tomcat=5.5.12
Tomcat=5.5.13
Tomcat=5.5.14
Tomcat=5.5.15
Tomcat=5.5.16
Tomcat=5.5.17
Tomcat=5.5.18
Tomcat=5.5.19
Tomcat=5.5.20
Tomcat=5.5.21
Tomcat=5.5.22
Tomcat=5.5.23
Tomcat=5.5.24
Tomcat=5.5.25
Tomcat=5.5.26
Tomcat=5.5.27
Tomcat=6.0.0
Tomcat=6.0.1
Tomcat=6.0.2
Tomcat=6.0.3
Tomcat=6.0.4
Tomcat=6.0.5
Tomcat=6.0.6
Tomcat=6.0.7
Tomcat=6.0.8
Tomcat=6.0.9
Tomcat=6.0.10
Tomcat=6.0.11
Tomcat=6.0.12
Tomcat=6.0.13
Tomcat=6.0.14
Tomcat=6.0.15
Tomcat=6.0.16

Remedy

http://svn.apache.org/viewvc?rev=742915&view=rev

Remedy

http://svn.apache.org/viewvc?rev=781362&view=rev

Remedy

http://tomcat.apache.org/security-4.html

Remedy

http://tomcat.apache.org/security-5.html

Remedy

http://tomcat.apache.org/security-6.html

Remedy

http://www.securityfocus.com/bid/35193

Remedy

http://www.vupen.com/english/advisories/2009/1496

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2009-0033?

    CVE-2009-0033 has a high severity rating as it can cause denial of service through a crafted request.

  • How do I fix CVE-2009-0033?

    To fix CVE-2009-0033, upgrade Apache Tomcat to a version beyond 6.0.18, 5.5.27, or 4.1.39.

  • Which versions of Apache Tomcat are affected by CVE-2009-0033?

    CVE-2009-0033 affects Apache Tomcat versions 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18.

  • What type of attack does CVE-2009-0033 facilitate?

    CVE-2009-0033 facilitates denial of service attacks that can lead to application outages.

  • Is there a workaround for CVE-2009-0033 if I can't upgrade?

    While upgrading is the best solution for CVE-2009-0033, temporary measures include restricting access to the AJP connector.

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