Bug 1793629 (CVE-2019-20041) - CVE-2019-20041 wordpress: HTML5 colon named entity mishandling in wp_kses_bad_protocol in wp-includes/kses.php allows bypass input sanitization
Summary: CVE-2019-20041 wordpress: HTML5 colon named entity mishandling in wp_kses_bad...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-20041
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: 1793630 1793631
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-01-21 17:37 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-10-28 05:23 UTC (History)
2 users (show)

Fixed In Version:
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Environment:
Last Closed: 2021-10-28 05:23:14 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2020-01-21 17:37:24 UTC 
wp_kses_bad_protocol in wp-includes/kses.php in WordPress before 5.3.1 mishandles the HTML5 colon named entity, allowing attackers to bypass input sanitization, as demonstrated by the javascript: substring.

Reference and upstream commit:
https://github.com/WordPress/wordpress-develop/commit/b1975463dd995da19bb40d3fa0786498717e3c53
Comment 1 Guilherme de Almeida Suckevicz 2020-01-21 17:38:24 UTC 
Created wordpress tracking bugs for this issue:

Affects: epel-6 [bug 1793630]
Affects: epel-7 [bug 1793631]
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