#VU105485 Input validation error in Apache Tomcat - CVE-2025-24813

Vulnerability identifier: #VU105485

Vulnerability risk: Critical

CVSSv4.0: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2025-24813

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Apache Tomcat
Server applications / Web servers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input when handling file uploads via HTTP PUT requests. A remote attacker can send a specially crafted HTTP PUT request to the server and gain access to sensitive information or even execute arbitrary code.

If all of the following were true, a malicious user was able to view security sensitive files and/or inject content into those files:

• writes enabled for the default servlet (disabled by default)
• support for partial PUT (enabled by default)
• a target URL for security sensitive uploads that is a sub-directory of a target URL for public uploads
• attacker knowledge of the names of security sensitive files being uploaded
• the security sensitive files also being uploaded via partial PUT

If all of the following were true, a malicious user was able to perform remote code execution:

• writes enabled for the default servlet (disabled by default)
• support for partial PUT (enabled by default)
• application was using Tomcat's file based session persistence with the default storage location
• application included a library that may be leveraged in a deserialization attack

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 9.0.0, 9.0.0-M1, 9.0.0-M2, 9.0.0-M3, 9.0.0-M4, 9.0.0-M5, 9.0.0-M6, 9.0.0-M7, 9.0.0-M8, 9.0.0-M9, 9.0.0-M10, 9.0.0-M11, 9.0.0-M12, 9.0.0-M13, 9.0.0-M14, 9.0.0-M15, 9.0.0-M16, 9.0.0-M17, 9.0.0-M18, 9.0.0-M19, 9.0.0-M20, 9.0.0-M21, 9.0.0-M22, 9.0.0-M23, 9.0.0-M24, 9.0.0-M25, 9.0.0-M26, 9.0.0-M27, 9.0.1, 9.0.2, 9.0.3, 9.0.4, 9.0.5, 9.0.6, 9.0.7, 9.0.8, 9.0.9, 9.0.10, 9.0.11, 9.0.12, 9.0.13, 9.0.14, 9.0.15, 9.0.16, 9.0.17, 9.0.18, 9.0.19, 9.0.20, 9.0.21, 9.0.22, 9.0.23, 9.0.24, 9.0.25, 9.0.26, 9.0.27, 9.0.28, 9.0.29, 9.0.30, 9.0.31, 9.0.32, 9.0.33, 9.0.34, 9.0.35, 9.0.36, 9.0.37, 9.0.38, 9.0.39, 9.0.40, 9.0.41, 9.0.42, 9.0.43, 9.0.44, 9.0.45, 9.0.46, 9.0.47, 9.0.48, 9.0.49, 9.0.50, 9.0.51, 9.0.52, 9.0.53, 9.0.54, 9.0.55, 9.0.56, 9.0.57, 9.0.58, 9.0.59, 9.0.60, 9.0.61, 9.0.62, 9.0.63, 9.0.64, 9.0.65, 9.0.66, 9.0.67, 9.0.68, 9.0.69, 9.0.70, 9.0.71, 9.0.72, 9.0.73, 9.0.74, 9.0.75, 9.0.76, 9.0.77, 9.0.78, 9.0.79, 9.0.80, 9.0.81, 9.0.82, 9.0.83, 9.0.84, 9.0.85, 9.0.86, 9.0.87, 9.0.88, 9.0.89, 9.0.90, 9.0.91, 9.0.92, 9.0.93, 9.0.94, 9.0.95, 9.0.96, 9.0.97, 9.0.98, 10.0.0, 10.0.0-M1, 10.0.0-M2, 10.0.0-M3, 10.0.0-M4, 10.0.0-M5, 10.0.0-M6, 10.0.0-M7, 10.0.0-M8, 10.0.0-M9, 10.0.0-M10, 10.0.0.0-M1, 10.0.1, 10.0.2, 10.0.3, 10.0.4, 10.0.5, 10.0.6, 10.0.7, 10.0.8, 10.0.9, 10.0.10, 10.0.11, 10.0.12, 10.0.13, 10.0.14, 10.0.15, 10.0.16, 10.0.17, 10.0.18, 10.0.19, 10.0.20, 10.0.21, 10.0.22, 10.0.23, 10.0.24, 10.0.25, 10.0.26, 10.0.27, 10.1.0, 10.1.0-M1, 10.1.0-M2, 10.1.0-M3, 10.1.0-M4, 10.1.0-M5, 10.1.0-M6, 10.1.0-M7, 10.1.0-M8, 10.1.0-M9, 10.1.0-M10, 10.1.0-M11, 10.1.0-M12, 10.1.0-M13, 10.1.0-M14, 10.1.0-M15, 10.1.0-M16, 10.1.0-M17, 10.1.0-M18, 10.1.0-M19, 10.1.0-M20, 10.1.1, 10.1.2, 10.1.3, 10.1.4, 10.1.5, 10.1.6, 10.1.7, 10.1.8, 10.1.9, 10.1.10, 10.1.11, 10.1.12, 10.1.13, 10.1.14, 10.1.15, 10.1.16, 10.1.17, 10.1.18, 10.1.19, 10.1.20, 10.1.21, 10.1.22, 10.1.23, 10.1.24, 10.1.25, 10.1.26, 10.1.27, 10.1.28, 10.1.29, 10.1.30, 10.1.31, 10.1.32, 10.1.33, 10.1.34, 11.0.0, 11.0.0-M1, 11.0.0-M2, 11.0.0-M3, 11.0.0-M4, 11.0.0-M5, 11.0.0-M6, 11.0.0-M7, 11.0.0-M8, 11.0.0-M9, 11.0.0-M10, 11.0.0-M11, 11.0.0-M12, 11.0.0-M13, 11.0.0-M14, 11.0.0-M15, 11.0.0-M16, 11.0.0-M17, 11.0.0-M18, 11.0.0-M19, 11.0.0-M20, 11.0.0-M21, 11.0.0-M22, 11.0.0-M23, 11.0.0-M24, 11.0.0-M25, 11.0.0-M26, 11.0.1, 11.0.2

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External links
https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.3
https://tomcat.apache.org/security-10.html
https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.99
https://github.com/apache/tomcat/commit/0a668e0c27f2b7ca0cc7c6eea32253b9b5ecb29c
https://github.com/apache/tomcat/commit/f6c01d6577cf9a1e06792be47e623d36acc3b5dc
https://github.com/apache/tomcat/commit/eb61aade8f8daccaecabf07d428b877975622f72
https://lists.apache.org/thread/xl35tnb4979lnk7stnvx9sll1hb68kvf

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.