Some critical vulnerabilities have been reported in Apache Tomcat, which can be exploited by malicious people to bypass certain security restrictions and cause a DoS (Denial of Service) attack. These vulnerabilities affect Apache Tomcat 6.x and Apache Tomcat 7.x .
According to CVE-2012-4431 , The CSRF prevention filter could be bypassed if a request was made to a protected resource without a session identifier present in the request.
CVE-2012-4534, DOS includes vulnerabilities ranging from excessive resource consumption (e.g. causing a system to use a lot of memory) to crashing an application or an entire system.
Whereas, CVE-2012-3546 - where malicious users or people can bypass certain security mechanisms of the application. The actual impact varies significantly depending on the design and purpose of the affected application.
If you are affected, Please update your Tomcat to a fixed version i.e
- Tomcat 7.x: Update to version 7.0.32.
- Tomcat 6.x: Update to version 6.0.36.
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