Bug 1529728 - marked: Cross-site Scripting (XSS) attacks via hexadecimal form of HTML
Summary: marked: Cross-site Scripting (XSS) attacks via hexadecimal form of HTML
Keywords:
Status: CLOSED UPSTREAM
Alias: None
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: 1529729 1529730
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-12-29 16:52 UTC by Laura Pardo
Modified: 2020-05-31 07:28 UTC (History)
1 user (show)

Fixed In Version: marked 0.3.9
Clone Of:
Environment:
Last Closed: 2019-06-08 03:35:56 UTC
Embargoed:

Attachments (Terms of Use)

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.
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