Bug 1934834 (CVE-2021-26813) - CVE-2021-26813 python-markdown2: Regular expression denial of service
Summary: CVE-2021-26813 python-markdown2: Regular expression denial of service
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-26813
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: 1934835 1934836
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-03-03 21:11 UTC by Pedro Sampaio
Modified: 2021-03-04 01:02 UTC (History)
1 user (show)

Fixed In Version:
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Clone Of:
Environment:
Last Closed: 2021-03-04 01:02:02 UTC
Embargoed:

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Description Pedro Sampaio 2021-03-03 21:11:35 UTC 
markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.

https://github.com/trentm/python-markdown2/pull/387
Comment 1 Pedro Sampaio 2021-03-03 21:12:09 UTC 
Created python-markdown2 tracking bugs for this issue:

Affects: epel-8 [bug 1934836]
Affects: fedora-all [bug 1934835]
Comment 2 Product Security DevOps Team 2021-03-04 01:02:02 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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