Bug 1557366 (CVE-2018-1086) - CVE-2018-1086 pcs: Debug parameter removal bypass, allowing information disclosure
Summary: CVE-2018-1086 pcs: Debug parameter removal bypass, allowing information discl...
Status: CLOSED ERRATA
Alias: CVE-2018-1086
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20180409,repor...
Keywords: Security
Depends On: 1557252 1557253 1557962 1565090 1565091
Blocks: 1550244
TreeView+ depends on / blocked
 
Reported: 2018-03-16 13:41 UTC by Cedric Buissart 🐶
Modified: 2019-06-11 11:13 UTC (History)
25 users (show)

(edit)
It was found that the REST interface of the pcsd service did not properly remove the pcs debug argument from the /run_pcs query, possibly disclosing sensitive information. A remote attacker with a valid token could use this flaw to elevate their privilege.
Clone Of:
(edit)
Last Closed: 2019-06-10 10:17:54 UTC


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1060 None None None 2018-04-10 09:12 UTC
Red Hat Product Errata RHSA-2018:1927 None None None 2018-06-19 04:55 UTC

Description Cedric Buissart 🐶 2018-03-16 13:41:36 UTC
To prevent some information disclosure, pcsd actively removes '--debug' from command requested over the REST interface, but this can be bypassed:
----8<---
 235   # do not reveal potentialy sensitive information
 236   command_decoded.delete('--debug')
---->8----

The information gained could then be used to gain higher privileges.

Comment 8 Cedric Buissart 🐶 2018-03-22 10:54:12 UTC
Acknowledgments:

Name: Cedric Buissart (Red Hat)

Comment 9 Cedric Buissart 🐶 2018-04-09 11:19:18 UTC
Created pcs tracking bugs for this issue:

Affects: fedora-all [bug 1565090]

Comment 11 errata-xmlrpc 2018-04-10 09:11:52 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:1060 https://access.redhat.com/errata/RHSA-2018:1060

Comment 12 errata-xmlrpc 2018-06-19 04:55:22 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:1927 https://access.redhat.com/errata/RHSA-2018:1927


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