vpn-user-portal (aka eduVPN or Let's Connect!) before 2.3.14, as packaged for Debian 10, Debian 11, and Fedora, allows remote authenticated users to obtain OS filesystem access, because of the interaction of QR codes with an exec that uses the -r option. This can be leveraged to obtain additional VPN access.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Link | Tags |
---|---|
https://list.surfnet.nl/pipermail/eduvpn-deploy/2021-September/000352.html | third party advisory mailing list |
https://github.com/eduvpn/vpn-user-portal/releases | release notes third party advisory |