Rule

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Sid
20612

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Summary:
This event is generated when an attempt is made to exploit a known vulnerability in tomcat.

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Impact:
Denial of Service.   

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Detailed Information:
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.

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

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Attack Scenarios:


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Ease of Attack:
Medium.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

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Contributors:
Sourcefire Vulnerability Research Team
This document was generated from data supplied by the National Vulnerability Database. A product of the National Institute of Standards and Technology.
For more information see http://nvd.nist.gov/

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Additional References:

NIST CVE-2009-0033:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-0033
  
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