openSUSE-SU-2021:0552-1

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openSUSE-SU-2021:0552-1

Summary: Security update for python-bleach

Details: This update for python-bleach fixes the following issues: - CVE-2021-23980: Fixed mutation XSS on bleach.clean with specific combinations of allowed tags (boo#1184547) Update to 3.1.5: * replace missing ``setuptools`` dependency with ``packaging``. Thank you Benjamin Peterson. Update to 3.1.4 (boo#1168280, CVE-2020-6817): * ``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 were vulnerable to ReDoS. For example, ``bleach.clean(..., attributes={'a': ['style']})``. * Style attributes with dashes, or single or double quoted values are cleaned instead of passed through. update to 3.1.3 (boo#1167379, CVE-2020-6816): * Add relative link to code of conduct. (#442) * Drop deprecated 'setup.py test' support. (#507) * Fix typo: curren -> current in tests/test_clean.py (#504) * Test on PyPy 7 * Drop test support for end of life Python 3.4 * ``bleach.clean`` behavior parsing embedded MathML and SVG content with RCDATA tags did not match browser behavior and could result in a mutation XSS. Calls to ``bleach.clean`` with ``strip=False`` and ``math`` or ``svg`` tags and one or more of the RCDATA tags ``script``, ``noscript``, ``style``, ``noframes``, ``iframe``, ``noembed``, or ``xmp`` in the allowed tags whitelist were vulnerable to a mutation XSS.

References: https://lists.opensuse.org/archives/list/[email protected]/thread/YFAKMJGUZHUTZ53ZAID6PRVP5MSLXPGV/, https://bugzilla.suse.com/1167379, https://bugzilla.suse.com/1168280, https://bugzilla.suse.com/1184547, https://www.suse.com/security/cve/CVE-2020-6816, https://www.suse.com/security/cve/CVE-2020-6817, https://www.suse.com/security/cve/CVE-2021-23980