CVE-2020-11414: telerik ui_for_silverlight Path Traversal

Vulnerability summary

CVE-2020-11414 is a high (CVSS 7.5) Path Traversal vulnerability in telerik ui_for_silverlight. EPSS estimates a 1.16% chance of exploitation in the next 30 days, higher than 66.6% of scored vulnerabilities.

Timeline

1. 31-03-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

An issue was discovered in Progress Telerik UI for Silverlight before 2020.1.330. The RadUploadHandler class in RadUpload for Silverlight expects a web request that provides the file location of the uploading file along with a few other parameters. The uploading file location should be inside the directory where the upload handler class is defined. Before 2020.1.330, a crafted web request could result in uploads to arbitrary locations.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.