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Insecure Library Loading
Moderately critical

Apache Tomcat Information Disclosure and Denial of Service

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Release Date:  2010-04-23    Last Update:  2010-07-12    Views:  7,613

Secunia Advisory SA39574

Where:

From remote

Impact:

Exposure of system information, DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A security issue and a vulnerability have been reported in Apache Tomcat, which can be exploited by malicious people to disclose certain system information and cause a DoS (Denial of Service).

1) A security issue is caused due to Tomcat using the local host name or the IP address to generate the realm name if no "<realm-name>" is specified for an application in web.xml. This can result in the disclosure of the local host name or the IP address of the system running Tomcat via a "WWW-Authenticate" HTTP header.

2) A vulnerability is caused due to Tomcat not properly handling HTTP requests containing a specially crafted "Transfer-Encoding" header. This can be exploited to e.g. cause potentially sensitive information to be leaked or prevent subsequent requests from being handled correctly by sending specially crafted HTTP requests.


Solution:
Update to version 5.5.30 and 6.0.28 or apply patches. Also fixed in version 7.0.1.

Further details available to Secunia VIM customers

Provided and/or discovered by:
The vendor credits:
1) Deniz Cevik
2) Steve Jones

Original Advisory:
http://tomcat.apache.org/security-5.html
http://tomcat.apache.org/security-6.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Apache Tomcat Information Disclosure and Denial of Service

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