Bug 1907497 (CVE-2020-27834)

Summary:	CVE-2020-27834 zabbix: attacker can send the same request over and over again without changing the CSRF token
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bennie.joubert, dan, ms, orion, volker27
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Zabbix. This flaw allows an attacker to use one CSRF token to send requests on a user’s behalf that are valid with each request. The highest threat from this vulnerability is to confidentiality and integrity.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-12-14 18:47:29 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1907498, 1907499, 1907500, 1907501
Bug Blocks:

Description Dhananjay Arunesh 2020-12-14 16:17:48 UTC

A vulnerability was found in Zabbix 5.0.2, where an attacker can use one CSRF token and send request on the user behalf, and the token will be valid in every request.

References:
ttp://almorabea.net/cves/zabbix.txt

Comment 1 Dhananjay Arunesh 2020-12-14 16:18:41 UTC

Created zabbix tracking bugs for this issue:

Affects: fedora-all [bug 1907498]


Created zabbix30 tracking bugs for this issue:

Affects: epel-7 [bug 1907499]


Created zabbix40 tracking bugs for this issue:

Affects: epel-7 [bug 1907500]
Affects: epel-8 [bug 1907501]

Comment 2 Dhananjay Arunesh 2020-12-14 16:20:15 UTC

Acknowledgments:

Name: Ahmad Almorabea (twitter @almorabea)

Comment 3 Product Security DevOps Team 2020-12-14 18:47:29 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

Comment 4 Orion Poplawski 2021-01-24 21:24:34 UTC

I can find no other supporting information about this supposed vulnerability.