Rule

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Sid
18096

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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:
 Information disclosure.  

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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 FORM authentication is used, allows remote attackers to enumerate valid usernames via requests to /j_security_check with malformed URL encoding of passwords, related to improper error checking in the (1) MemoryRealm, (2) DataSourceRealm, and (3) JDBCRealm authentication realms, as demonstrated by a % (percent) value for the j_password parameter.

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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:
Difficult.

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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-2009-0580:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-0580
  
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