Bug 1868441 (CVE-2020-16266)

Summary:	CVE-2020-16266 mantis: HTML injection (maybe XSS) via custom field on view_all_bug_page.php
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	giallu
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:	2020-08-12 21:15:22 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:	1868442
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2020-08-12 17:16:59 UTC

An XSS issue was discovered in MantisBT before 2.24.2. Improper escaping on view_all_bug_page.php allows a remote attacker to inject arbitrary HTML into the page by saving it into a text Custom Field, leading to possible code execution in the browser of any user subsequently viewing the issue (if CSP settings allow it).

References:
https://mantisbt.org/bugs/view.php?id=27056
https://mantisbt.org/blog/archives/mantisbt/665

Comment 1 Guilherme de Almeida Suckevicz 2020-08-12 17:20:22 UTC

Created mantis tracking bugs for this issue:

Affects: fedora-all [bug 1868442]

Comment 2 Product Security DevOps Team 2020-08-12 21:15:22 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.