CVE-2025-32428: Jupyter Remote Desktop Proxy makes TigerVNC accessible via the network and not just via a UNIX socket as intended
Description
Jupyter Remote Desktop Proxy allows you to run a Linux Desktop on a JupyterHub. jupyter-remote-desktop-proxy was meant to rely on UNIX sockets readable only by the current user since version 3.0.0, but when used with TigerVNC, the VNC server started by jupyter-remote-desktop-proxy were still accessible via the network. This vulnerability does not affect users having TurboVNC as the vncserver executable. This issue is fixed in 3.0.1.
Classification
CVE ID: CVE-2025-32428
CVSS Base Severity: CRITICAL
CVSS Base Score: 9.0
CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Problem Types
CWE-668: Exposure of Resource to Wrong SphereAffected Products
Vendor: jupyterhub
Product: jupyter-remote-desktop-proxy
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 2.44% (scored less or equal to compared to others)
EPSS Date: 2025-04-16 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-32428https://github.com/jupyterhub/jupyter-remote-desktop-proxy/security/advisories/GHSA-vrq4-9hc3-cgp7
https://github.com/jupyterhub/jupyter-remote-desktop-proxy/commit/7dd54c25a4253badd8ea68895437e5a66a59090d