Description
An issue exists within Piwigo before v.14.2.0 allowing a malicious user to take over the application. This exploit involves chaining a Cross Site Request Forgery vulnerability to issue a Stored Cross Site Scripting payload stored within an Admin user's dashboard, executing remote JavaScript. This can be used to upload a new PHP file under an administrator and directly call that file from the victim's instance to connect back to a malicious listener.
Remediation
References
Related Vulnerabilities
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Apache Tomcat Permissions, Privileges, and Access Controls Vulnerability (CVE-2009-2901)
OpenSSL Possible denial of service attack Vulnerability (CVE-2020-1971)