CVEs-PoC/2020/CVE-2020-6817.md

CVE-2020-6817

Description

bleach.clean behavior parsing style attributes could result in a regular expression denial of service (ReDoS). Calls to bleach.clean with an allowed tag with an allowed style attribute are vulnerable to ReDoS. For example, bleach.clean(..., attributes={'a': ['style']}).

POC

Reference

• https://bugzilla.mozilla.org/show_bug.cgi?id=1623633

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/RonenDabach/-python-tda-bug-hunt-new
• https://github.com/engn33r/awesome-redos-security