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Bug 1550243 - (CVE-2018-1079) CVE-2018-1079 pcs: Privilege escalation via authorized user malicious REST call
CVE-2018-1079 pcs: Privilege escalation via authorized user malicious REST call
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20180409,repo...
: Security
Depends On: 1565087 1557252 1557253 1565088
Blocks: 1550244
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Reported: 2018-02-28 15:25 EST by Pedro Sampaio
Modified: 2018-04-11 04:38 EDT (History)
27 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 sanitize the file name from the /remote/put_file query. If the /etc/booth directory exists, an authenticated attacker with write permissions could create or overwrite arbitrary files with arbitrary data outside of the /etc/booth directory, in the context of the pcsd process.
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Clone Of:
Environment:
Last Closed: 2018-04-11 04:38:00 EDT
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CRM:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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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 05:11 EDT

  None (edit)
Description Pedro Sampaio 2018-02-28 15:25:30 EST 
A security issue was found in pcs deamon that permits an authorized user (with write permission in pcsd) to escalate privileges and write to any file in the system using a malicious REST call.
Comment 1 Pedro Sampaio 2018-02-28 15:29:15 EST 
Acknowledgments:

Name: Ondrej Mular (Red Hat)
Comment 10 Cedric Buissart 2018-04-09 07:17:10 EDT 
Created pcs tracking bugs for this issue:

Affects: fedora-all [bug 1565088]
Comment 12 errata-xmlrpc 2018-04-10 05:11:26 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
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