Bug 1529728

Summary:	marked: Cross-site Scripting (XSS) attacks via hexadecimal form of HTML
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	tchollingsworth
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	marked 0.3.9	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:35:56 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:	1529729, 1529730
Bug Blocks:

Description Laura Pardo 2017-12-29 16:52:48 UTC

A flaw was found in marked, a markdown parser and compiler used for rendering markdown content to html. Affected versions of the package are vulnerable to Cross-site Scripting (XSS) attacks.
Browsers support both lowercase and uppercase x in hexadecimal form of HTML character entity, but marked unescaped only lowercase.

[UPSTREAM BUG]
https://github.com/chjj/marked/issues/925

[UPSTREAM PATCH]
https://github.com/UziTech/marked/commit/6d1901ff71abb83aa32ca9a5ce47471382ea42a9

Comment 1 Laura Pardo 2017-12-29 16:59:03 UTC

Created marked tracking bugs for this issue:

Affects: epel-all [bug 1529730]
Affects: fedora-all [bug 1529729]

Comment 2 Product Security DevOps Team 2019-06-08 03:35:56 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.