Velocity Tools XSS Vulnerability
Vulnerability Description
The default error page for VelocityView in Apache Velocity Tools prior to 3.1 reflects back the vm file that was entered as part of the URL. An attacker can set an XSS payload file as this vm file in the URL which results in this payload being executed. XSS vulnerabilities allow attackers to execute arbitrary JavaScript in the context of the attacked website and the attacked user. This can be abused to steal session cookies, perform requests in the name of the victim or for phishing attacks.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-13959
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- This issue was reported and a patch was submitted by Jackson Henry, member of Sakura Samurai.
References
- https://lists.apache.org/thread.html/r6802a38c3041059e763a1aadd7b37fe95de75408144b5805e29b84e3%40%3Cuser.velocity.apache.org%3E
- https://lists.apache.org/thread.html/r6802a38c3041059e763a1aadd7b37fe95de75408144b5805e29b84e3%40%3Cuser.velocity.apache.org%3E
- https://lists.apache.org/thread.html/rb042f3b0090e419cc9f5a3d32cf0baff283ccd6fcb1caea61915d6b6%40%3Ccommits.velocity.apache.org%3E
- https://lists.apache.org/thread.html/rf9868c564cff7adfd5283563f2309b93b3e496354a211a57503b2f72%40%3Cannounce.apache.org%3E
- http://www.openwall.com/lists/oss-security/2021/03/10/2
- https://lists.debian.org/debian-lts-announce/2021/03/msg00021.html
- https://lists.apache.org/thread.html/r97edad0655770342d2d36620fb1de50b142fcd6c4f5c53dd72ca41d7%40%3Cuser.velocity.apache.org%3E
- https://security.gentoo.org/glsa/202107-52
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