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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Velocity Tools | < 3.1 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/03/10/2Mailing ListThird Party Advisory
- https://lists.apache.org/thread.html/r6802a38c3041059e763a1aadd7b37fe95de7540814Mailing ListVendor Advisory
- https://lists.apache.org/thread.html/r6802a38c3041059e763a1aadd7b37fe95de7540814Mailing ListVendor Advisory
- https://lists.apache.org/thread.html/r97edad0655770342d2d36620fb1de50b142fcd6c4f
- https://lists.apache.org/thread.html/rb042f3b0090e419cc9f5a3d32cf0baff283ccd6fcb
- https://lists.apache.org/thread.html/rf9868c564cff7adfd5283563f2309b93b3e496354a
- https://lists.debian.org/debian-lts-announce/2021/03/msg00021.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202107-52Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/03/10/2Mailing ListThird Party Advisory
- https://lists.apache.org/thread.html/r6802a38c3041059e763a1aadd7b37fe95de7540814Mailing ListVendor Advisory
- https://lists.apache.org/thread.html/r6802a38c3041059e763a1aadd7b37fe95de7540814Mailing ListVendor Advisory
- https://lists.apache.org/thread.html/r97edad0655770342d2d36620fb1de50b142fcd6c4f
- https://lists.apache.org/thread.html/rb042f3b0090e419cc9f5a3d32cf0baff283ccd6fcb
- https://lists.apache.org/thread.html/rf9868c564cff7adfd5283563f2309b93b3e496354a
- https://lists.debian.org/debian-lts-announce/2021/03/msg00021.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2020-13959?
CVE-2020-13959 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 ...
How severe is CVE-2020-13959?
CVE-2020-13959 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-13959?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Velocity Tools, Debian Debian Linux.