[SECURITY] CVE-2024-50379 Apache Tomcat - RCE via write-enabled default servlet

[Mark Thomas <ma...@apache.org>]

CVE-2024-50379 Apache Tomcat - RCE via write-enabled default servlet

Severity: Important

Vendor: The Apache Software Foundation

Versions Affected:
Apache Tomcat 11.0.0-M1 to 11.0.1
Apache Tomcat 10.1.0-M1 to 10.1.33
Apache Tomcat 9.0.0.M1 to 9.0.97

Description:
If the default servlet is write enabled (readonly initialisation 
parameter set to the non-default value of false) for a case insensitive 
file system, concurrent read and upload under load of the same file can 
bypass Tomcat's case sensitivity checks and cause an uploaded file to be 
treated as a JSP leading to remote code execution.

Mitigation:
Users of the affected versions should apply one of the following
mitigations:
- Upgrade to Apache Tomcat 11.0.2 or later
- Upgrade to Apache Tomcat 10.1.34 or later
- Upgrade to Apache Tomcat 9.0.98 or later

Credit:
This vulnerability identified by Nacl, WHOAMI, Yemoli and Ruozhi.

History:
2024-12-17 Original advisory

References:
[1] https://tomcat.apache.org/security-11.html
[2] https://tomcat.apache.org/security-10.html
[3] https://tomcat.apache.org/security-9.html

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