Bug 1128767 – CVE-2014-5031 cups: world-readable permissions

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Bug 1128767 - (CVE-2014-5031) CVE-2014-5031 cups: world-readable permissions

Summary:	CVE-2014-5031 cups: world-readable permissions

Status:	CLOSED ERRATA

Aliases:	CVE-2014-5031

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20140722,repor...
Keywords:	Security

Depends On:	1122601 1128793 1128794 1128795
Blocks:	1101912 1115577
	Show dependency tree / graph

Reported:	2014-08-11 10:07 EDT by Francisco Alonso
Modified:	2015-07-31 03:24 EDT (History)
CC List:	5 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	It was discovered that CUPS allowed certain users to create symbolic links in certain directories under /var/cache/cups/. A local user with the 'lp' group privileges could use this flaw to read the contents of arbitrary files on the system or, potentially, escalate their privileges on the system.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2015-03-26 17:43:17 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
CUPS Bugs and Features	4455	None	None	None	Never
CUPS Bugs and Features	4461	None	None	None	Never
Red Hat Product Errata	RHSA-2014:1388	normal	SHIPPED_LIVE	Moderate: cups security and bug fix update	2014-10-13 21:21:38 EDT

Groups: None (edit)

Description Francisco Alonso 2014-08-11 10:07:41 EDT

It was reported [1] that CUPS does not check that files have world-readable permissions, which allow to local users to obtain sensitive information.

Upstream patches are available at [2] as well.

[1]: http://seclists.org/oss-sec/2014/q3/209
[2]: https://cups.org/str.php?L4455

Comment 1 Francisco Alonso 2014-08-11 10:42:27 EDT

Statement:

This issue is not planned to be fixed in Red Hat Enterprise Linux 5 as it is now in Production 3 Phase of the support and maintenance life cycle, https://access.redhat.com/support/policy/updates/errata/

Comment 4 Francisco Alonso 2014-08-11 10:46:02 EDT

Created cups tracking bugs for this issue:

Affects: fedora-all [bug 1128795]

Comment 5 Tim Waugh 2014-08-11 12:08:42 EDT

The original upstream fix was in STR #4455.

This caused a regression: 'cupsctl -U root' now fails, as does 'View Error Log' in the web interface.

The regression is STR #4461. I've made a patch for this:
  https://cups.org/str.php?L4461

Comment 7 Martin Prpič 2014-10-07 04:44:45 EDT

IssueDescription:

It was discovered that CUPS allowed certain users to create symbolic links in certain directories under /var/cache/cups/. A local user with the 'lp' group privileges could use this flaw to read the contents of arbitrary files on the system or, potentially, escalate their privileges on the system.

Comment 8 errata-xmlrpc 2014-10-14 03:31:58 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:1388 https://rhn.redhat.com/errata/RHSA-2014-1388.html

Comment 9 Tomas Hoger 2015-03-26 17:43:17 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHBA-2015:0386 https://rhn.redhat.com/errata/RHBA-2015-0386.html

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