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Bug 1557366 - (CVE-2018-1086) CVE-2018-1086 pcs: Debug parameter removal bypass, allowing information disclosure
CVE-2018-1086 pcs: Debug parameter removal bypass, allowing information discl...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20180409,repor...
: Security
Depends On: 1565091 1557252 1557253 1557962 1565090
Blocks: 1550244
  Show dependency tree / graph
 
Reported: 2018-03-16 09:41 EDT by Cedric Buissart
Modified: 2018-06-19 00:55 EDT (History)
26 users (show)

See Also:
Fixed In Version: pcs 0.9.164, pcs 0.10
Doc Type: If docs needed, set a value
Doc Text:
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.
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Last Closed:
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CRM:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1060 None None None 2018-04-10 05:12 EDT
Red Hat Product Errata RHSA-2018:1927 None None None 2018-06-19 00:55 EDT

  None (edit)
Description Cedric Buissart 2018-03-16 09:41:36 EDT 
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 06:54:12 EDT 
Acknowledgments:

Name: Cedric Buissart (Red Hat)
Comment 9 Cedric Buissart 2018-04-09 07:19:18 EDT 
Created pcs tracking bugs for this issue:

Affects: fedora-all [bug 1565090]
Comment 11 errata-xmlrpc 2018-04-10 05:11:52 EDT 
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 00:55:22 EDT 
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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