Bug 1848680 (CVE-2020-4046) - CVE-2020-4046 wordpress: authenticated XSS through embed block
Summary: CVE-2020-4046 wordpress: authenticated XSS through embed block
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-4046
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1848681 1848682
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-06-18 18:14 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-06-18 23:20 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-06-18 23:20:31 UTC


Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2020-06-18 18:14:07 UTC
In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).

Reference:
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rpwf-hrh2-39jf

Comment 1 Guilherme de Almeida Suckevicz 2020-06-18 18:14:24 UTC
Created wordpress tracking bugs for this issue:

Affects: epel-all [bug 1848682]
Affects: fedora-all [bug 1848681]

Comment 2 Product Security DevOps Team 2020-06-18 23:20:31 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.


Note You need to log in before you can comment on or make changes to this bug.