Bug 33278 – cups: Privilege Escalation

Bug 33278 - cups: Privilege Escalation


Summary:	cups: Privilege Escalation

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	Security updates
Version:	UCS 3.0
Hardware:	Other Linux

Importance:	P3 normal (vote)
Target Milestone:	UCS 4.0
Assigned To:	Felix Botner
QA Contact:	Janek Walkenhorst

URL:
Keywords:	interim-3

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2013-11-12 11:10 CET by Moritz Muehlenhoff
Modified:	2014-11-26 06:55 CET (History)
CC List:	1 user (show)

See Also:
What kind of report is it?:	---
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:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Moritz Muehlenhoff

2013-11-12 11:10:30 CET

+++ This bug was initially created as a clone of Bug #29197 +++

Mitglieder der Gruppe lpadmin können über das Cups-Webinterface Root-Rechte
erlangen (CVE-2012-5519)

The group is empty by default, so this should only affect special UCS setups.

The fix provided in http://www.debian.org/security/2013/dsa-2600 is not directly applicable to UCS: 

It splits some configuration options from /etc/cups/cupsd.conf into a separate cups-files.conf, which can can be edited by root. We would need to modify that in the UCR templates, which should rather be done for 3.2

The patch from http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=692791#46 is another alternative; is disallows editing of /etc/cups/cupsd.conf from the web interface (which trashes the setting written from the template, so it's the better fix anyway).

Comment 1 Moritz Muehlenhoff

2014-07-15 07:50:00 CEST

This will be fixed in 4.0 when we update the UCR templates for CUPS to the new version in Wheezy.

Comment 2 Felix Botner

2014-10-16 10:52:51 CEST

Update config (cupsd.conf, cups-files.conf, cups-pdf.conf)files.

Comment 3 Janek Walkenhorst

2014-11-11 16:43:54 CET

OK: only cupsd.conf editable.
Changelog: OK

Comment 4 Stefan Gohmann

2014-11-26 06:55:01 CET

UCS 4.0-0 has been released:
 http://docs.univention.de/release-notes-4.0-0-en.html
 http://docs.univention.de/release-notes-4.0-0-de.html

If this error occurs again, please use "Clone This Bug".