Bug 1299614 – CVE-2016-0720 pcs: Cross-Site Request Forgery in web UI

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Bug 1299614 - (CVE-2016-0720) CVE-2016-0720 pcs: Cross-Site Request Forgery in web UI

Summary:	CVE-2016-0720 pcs: Cross-Site Request Forgery in web UI

Status:	CLOSED ERRATA

Aliases:	CVE-2016-0720

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=20160216,repor...
Keywords:	Security

Depends On:	1308827 1330884
Blocks:	1299618 1323912
	Show dependency tree / graph

Reported:	2016-01-18 13:45 EST by Martin Prpič
Modified:	2016-11-06 00:27 EDT (History)
CC List:	5 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	A Cross-Site Request Forgery (CSRF) flaw was found in the pcsd web UI. A remote attacker could provide a specially crafted web page that, when visited by a user with a valid pcsd session, would allow the attacker to trigger requests on behalf of the user, for example removing resources or restarting/removing nodes.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-11-06 00:27:28 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
Red Hat Product Errata	RHSA-2016:2596	normal	SHIPPED_LIVE	Moderate: pcs security, bug fix, and enhancement update	2016-11-03 08:11:34 EDT

Groups: None (edit)

Description Martin Prpič 2016-01-18 13:45:23 EST

The pcsd web UI is vulnerable to Cross-Site Request Forgery (CSRF). A remote attacker could provide a specially crafted web page that, when visited by a user with a valid pcsd session, would allow the attacker to trigger requests on behalf of the user, for example removing resources, restarting/removing nodes, etc.

Each request includes 'X-Requested-With: XMLHttpRequest' but this header is not checked server side.

Comment 1 Ján Rusnačko 2016-01-19 02:23:58 EST

Acknowledgements:

Name: Martin Prpic (Red Hat Product Security)

Comment 2 Martin Prpič 2016-01-19 04:35:45 EST

Statement:

This issue is not currently planned to be addressed in future updates of Red Hat Enterprise Linux 6, as the web UI functionality is disabled by default in pcsd.

Comment 3 Martin Prpič 2016-02-16 03:51:19 EST

Upstream patches:

https://github.com/feist/pcs/commit/3360ecd318f7631bf5826d99a20bf4b29d86dc9c
https://github.com/feist/pcs/commit/d49435de20f71bd0816c42b445ed484dd21fbe96
https://github.com/feist/pcs/commit/b9e7f061788c3b86a0c67d2d4158f067ec5eb625

Comment 4 Martin Prpič 2016-02-16 03:53:54 EST

Created pcs tracking bugs for this issue:

Affects: fedora-all [bug 1308827]

Comment 5 Fedora Update System 2016-03-02 16:50:28 EST

pcs-0.9.149-2.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2016-03-03 15:25:41 EST

pcs-0.9.149-2.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 8 errata-xmlrpc 2016-11-03 16:56:14 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2596 https://rhn.redhat.com/errata/RHSA-2016-2596.html

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