Intrusion Prevention

Apache.Tomcat.Large.Chunked.Transfer.DoS

Description

This indicates an attack attempt to exploit a Denial of Service vulnerability in Apache Tomcat.
The vulnerability is due to an error when vulnerable software handles a crafted HTTP chunked Transfer coding. A remote attacker may be able to exploit this to cause a denial of service condition on the affected system.

Affected Products

Apache Software Foundation Tomcat 6.0.0 prior to 6.0.39
Apache Software Foundation Tomcat 7.0.0 prior to 7.0.50
Apache Software Foundation Tomcat 8.0.0-RC1 to 8.0.0-RC5

Impact

Denial of Service: Remote attackers can crash vulnerable systems or services

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
http://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.50

CVE References

CVE-2013-4322