Bug 1793658 (CVE-2019-20043)

Summary:	CVE-2019-20043 wordpress: authenticated users who do not have the rights to publish a post are able to mark posts as sticky or unsticky via the REST API
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	fedora, kevin
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-28 05:23:18 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:	1793659, 1793660
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2020-01-21 18:47:38 UTC

In in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php in WordPress 3.7 to 5.3.0, authenticated users who do not have the rights to publish a post are able to mark posts as sticky or unsticky via the REST API. For example, the contributor role does not have such rights, but this allowed them to bypass that. This has been patched in WordPress 5.3.1, along with all the previous WordPress versions from 3.7 to 5.3 via a minor release.

Reference:
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-g7rg-hchx-c2gw

Upstream commit:
https://github.com/WordPress/wordpress-develop/commit/1d1d5be7aa94608c04516cac4238e8c22b93c1d9

Comment 1 Guilherme de Almeida Suckevicz 2020-01-21 18:49:43 UTC

Created wordpress tracking bugs for this issue:

Affects: epel-6 [bug 1793659]
Affects: epel-7 [bug 1793660]