Remote OS Filesystem Access and VPN Privilege Escalation in vpn-user-portal (aka eduVPN or Let's Connect!)

CVE-2021-41583 · MEDIUM Severity

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Learn more about our Cis Benchmark Audit For Debian Linux.