Bug 49043

Summary:	univention-novnc runs as root
Product:	UCS	Reporter:	Philipp Hahn <hahn>
Component:	Virtualization - UVMM	Assignee:	UCS maintainers <ucs-maintainers>
Status:	CLOSED WONTFIX	QA Contact:	UCS maintainers <ucs-maintainers>
Severity:	normal
Priority:	P5	CC:	best, damrose
Version:	UCS 4.4
Target Milestone:	---
Hardware:	Other
OS:	Linux
See Also:	https://forge.univention.org/bugzilla/show_bug.cgi?id=35428
What kind of report is it?:	Security Issue	What type of bug is this?:	---
Who will be affected by this bug?:	---	How will those affected feel about the bug?:	---
User Pain:		Enterprise Customer affected?:
School Customer affected?:		ISV affected?:
Waiting Support:		Flags outvoted (downgraded) after PO Review:
Ticket number:		Bug group (optional):
Max CVSS v3 score:	0.0 (CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:N)

Description Philipp Hahn

2019-03-19 17:48:09 CET

/etc/init.d/univention-novnc:49
> start-stop-daemon --start ... --user novnc ...

is only a *check*, so `websockify` runs as user 'root';
`--chuid` is the right option to use.

Our version of noVNC is quiet old and contains at least one known security vulnerability (Bug #35428: CVE-2013-7436). My current reading is that it cannot be used to get access to the host system.
Nevertheless the network facing daemon should not run as user 'root'.

UCS technical training 2019-03-21/22

Comment 1 Philipp Hahn

2023-06-28 10:44:08 CEST

UVMM and virtualization with UCS is deprecated and will no longer be developed in UCS 4.4; they have already been removed from UCS 5.0.