WSO2 Multiple Products Unrestrictive Upload of File Vulnerability

A remote attacker, without authentication, can achieve full data confidentiality loss, arbitrary modification of data, complete denial of service or system unavailability. CISA has confirmed use of this vulnerability in known ransomware campaigns — treat as high priority for remediation. Federal agencies are required to remediate by 2022-05-16 under CISA BOD 22-01.

This is a Path Traversal (CWE-22) vulnerability in WSO2 Multiple Products. Certain WSO2 products allow unrestricted file upload with resultant remote code execution. The attacker must use a /fileupload endpoint with a Content-Disposition directory traversal sequence to reach a directory under the web root, such as a ../../../../repository/deployment/server/webapps directory. This affects WSO2 API Manager 2.2.0 up to 4.0.0, WSO2 Identity Server 5.2.0 up to 5.11.0, WSO2 Identity Server Analytics 5.4.0, 5.4.1, 5.5.0 and 5.6.0, WSO2 Identity Server as Key Manager 5.3.0 up to 5.11.0, WSO2 Enterprise Integrator 6.2.0 up to 6.6.0, WSO2 Open Banking AM 1.4.0 up to 2.0.0 and WSO2 Open Banking KM 1.4.0, up to 2.0.0. Exploitation requires remote network access, low attack complexity, no authentication required, and no user interaction required.

Probably yes if any of these apply:

Used in known ransomware campaigns. Threat-research write-up: http://packetstormsecurity.com/files/166921/WSO-Arbitrary-File-Upload-Remote-Code-Execution.html