Bug 1827491 (CVE-2020-6816) - CVE-2020-6816 python-bleach: Mutation cross-site scripting in bleach.clean
Summary: CVE-2020-6816 python-bleach: Mutation cross-site scripting in bleach.clean
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-6816
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: 1827494 1827493
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-04-24 03:44 UTC by Pedro Sampaio
Modified: 2020-04-24 04:31 UTC (History)
2 users (show)

Fixed In Version: python-bleach 3.1.2
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Clone Of:
Environment:
Last Closed: 2020-04-24 04:31:50 UTC

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Description Pedro Sampaio 2020-04-24 03:44:23 UTC 
In Mozilla Bleach before 3.12, a mutation XSS in bleach.clean when RCDATA and either svg or math tags are whitelisted and the keyword argument strip=False.

References:

https://github.com/mozilla/bleach/security/advisories/GHSA-m6xf-fq7q-8743
Comment 1 Pedro Sampaio 2020-04-24 03:45:29 UTC 
Created python-bleach tracking bugs for this issue:

Affects: epel-all [bug 1827494]
Affects: fedora-all [bug 1827493]
Comment 2 Product Security DevOps Team 2020-04-24 04:31:50 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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