vulnerability

Red Hat: CVE-2020-28493: ReDoS vulnerability in the urlize filter (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Feb 1, 2021
Added
Nov 10, 2021
Modified
Jul 9, 2025

Description

This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the `_punctuation_re regex` operator and its use of multiple wildcards. The last wildcard is the most exploitable as it searches for trailing punctuation. This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory.

Solution(s)

no-fix-redhat-rpm-packageredhat-upgrade-babelredhat-upgrade-cython-debugsourceredhat-upgrade-numpy-debugsourceredhat-upgrade-python-cffi-debugsourceredhat-upgrade-python-coverage-debugsourceredhat-upgrade-python-cryptography-debugsourceredhat-upgrade-python-lxml-debugsourceredhat-upgrade-python-markupsafe-debugsourceredhat-upgrade-python-nose-docsredhat-upgrade-python-psutil-debugsourceredhat-upgrade-python-psycopg2-debuginforedhat-upgrade-python-psycopg2-debugsourceredhat-upgrade-python-psycopg2-docredhat-upgrade-python-pymongo-debuginforedhat-upgrade-python-pymongo-debugsourceredhat-upgrade-python-sqlalchemy-docredhat-upgrade-python2redhat-upgrade-python2-attrsredhat-upgrade-python2-babelredhat-upgrade-python2-backportsredhat-upgrade-python2-backports-ssl_match_hostnameredhat-upgrade-python2-bsonredhat-upgrade-python2-bson-debuginforedhat-upgrade-python2-chardetredhat-upgrade-python2-coverageredhat-upgrade-python2-coverage-debuginforedhat-upgrade-python2-cythonredhat-upgrade-python2-cython-debuginforedhat-upgrade-python2-debugredhat-upgrade-python2-debuginforedhat-upgrade-python2-debugsourceredhat-upgrade-python2-develredhat-upgrade-python2-dnsredhat-upgrade-python2-docsredhat-upgrade-python2-docs-inforedhat-upgrade-python2-docutilsredhat-upgrade-python2-funcsigsredhat-upgrade-python2-idnaredhat-upgrade-python2-ipaddressredhat-upgrade-python2-jinja2redhat-upgrade-python2-libsredhat-upgrade-python2-lxmlredhat-upgrade-python2-lxml-debuginforedhat-upgrade-python2-markupsaferedhat-upgrade-python2-mockredhat-upgrade-python2-noseredhat-upgrade-python2-numpyredhat-upgrade-python2-numpy-debuginforedhat-upgrade-python2-numpy-docredhat-upgrade-python2-numpy-f2pyredhat-upgrade-python2-pipredhat-upgrade-python2-pip-wheelredhat-upgrade-python2-pluggyredhat-upgrade-python2-psycopg2redhat-upgrade-python2-psycopg2-debugredhat-upgrade-python2-psycopg2-debug-debuginforedhat-upgrade-python2-psycopg2-debuginforedhat-upgrade-python2-psycopg2-testsredhat-upgrade-python2-pyredhat-upgrade-python2-pygmentsredhat-upgrade-python2-pymongoredhat-upgrade-python2-pymongo-debuginforedhat-upgrade-python2-pymongo-gridfsredhat-upgrade-python2-pymysqlredhat-upgrade-python2-pysocksredhat-upgrade-python2-pytestredhat-upgrade-python2-pytest-mockredhat-upgrade-python2-pytzredhat-upgrade-python2-pyyamlredhat-upgrade-python2-pyyaml-debuginforedhat-upgrade-python2-requestsredhat-upgrade-python2-rpm-macrosredhat-upgrade-python2-scipyredhat-upgrade-python2-scipy-debuginforedhat-upgrade-python2-setuptoolsredhat-upgrade-python2-setuptools-wheelredhat-upgrade-python2-setuptools_scmredhat-upgrade-python2-sixredhat-upgrade-python2-sqlalchemyredhat-upgrade-python2-testredhat-upgrade-python2-tkinterredhat-upgrade-python2-toolsredhat-upgrade-python2-urllib3redhat-upgrade-python2-virtualenvredhat-upgrade-python2-wheelredhat-upgrade-python2-wheel-wheelredhat-upgrade-python3-jinja2redhat-upgrade-python38redhat-upgrade-python38-asn1cryptoredhat-upgrade-python38-atomicwritesredhat-upgrade-python38-attrsredhat-upgrade-python38-babelredhat-upgrade-python38-cffiredhat-upgrade-python38-cffi-debuginforedhat-upgrade-python38-chardetredhat-upgrade-python38-cryptographyredhat-upgrade-python38-cryptography-debuginforedhat-upgrade-python38-cythonredhat-upgrade-python38-cython-debuginforedhat-upgrade-python38-debugredhat-upgrade-python38-debuginforedhat-upgrade-python38-debugsourceredhat-upgrade-python38-develredhat-upgrade-python38-idleredhat-upgrade-python38-idnaredhat-upgrade-python38-jinja2redhat-upgrade-python38-libsredhat-upgrade-python38-lxmlredhat-upgrade-python38-lxml-debuginforedhat-upgrade-python38-markupsaferedhat-upgrade-python38-markupsafe-debuginforedhat-upgrade-python38-mod_wsgiredhat-upgrade-python38-more-itertoolsredhat-upgrade-python38-numpyredhat-upgrade-python38-numpy-debuginforedhat-upgrade-python38-numpy-docredhat-upgrade-python38-numpy-f2pyredhat-upgrade-python38-packagingredhat-upgrade-python38-pipredhat-upgrade-python38-pip-wheelredhat-upgrade-python38-pluggyredhat-upgrade-python38-plyredhat-upgrade-python38-psutilredhat-upgrade-python38-psutil-debuginforedhat-upgrade-python38-psycopg2redhat-upgrade-python38-psycopg2-debuginforedhat-upgrade-python38-psycopg2-docredhat-upgrade-python38-psycopg2-testsredhat-upgrade-python38-pyredhat-upgrade-python38-pycparserredhat-upgrade-python38-pymysqlredhat-upgrade-python38-pyparsingredhat-upgrade-python38-pysocksredhat-upgrade-python38-pytestredhat-upgrade-python38-pytzredhat-upgrade-python38-pyyamlredhat-upgrade-python38-pyyaml-debuginforedhat-upgrade-python38-requestsredhat-upgrade-python38-rpm-macrosredhat-upgrade-python38-scipyredhat-upgrade-python38-scipy-debuginforedhat-upgrade-python38-setuptoolsredhat-upgrade-python38-setuptools-wheelredhat-upgrade-python38-sixredhat-upgrade-python38-testredhat-upgrade-python38-tkinterredhat-upgrade-python38-urllib3redhat-upgrade-python38-wcwidthredhat-upgrade-python38-wheelredhat-upgrade-python38-wheel-wheelredhat-upgrade-pyyaml-debugsourceredhat-upgrade-scipy-debugsource
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