Regular Expression Denial of Service (ReDoS)
This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDOS vulnerability of the regex is mainly due to the sub-pattern [a-zA-Z0-9.-]+.[a-zA-Z0-9.-]+ 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.
This contains a fix for a speed issue with the urlize filter. urlize is likely to be called on untrusted user input. For certain inputs some of the regular expressions used to parse the text could take a very long time due to backtracking. As part of the fix, the email matching became slightly stricter. The various speedups apply to urlize in general, not just the specific input cases.
Improve the speed of the urlize filter by reducing regex backtracking. Email matching requires a word character at the start of the domain part, and only word characters in the TLD. 1343
Version 2.11.2
Released 2020-04-13
Fix a bug that caused callable objects with __getattr__, like ~unittest.mock.Mock to be treated as a contextfunction. 1145
Update wordcount filter to trigger Undefined methods by wrapping the input in soft_str. 1160
Fix a hang when displaying tracebacks on Python 32-bit. 1162
Showing an undefined error for an object that raises AttributeError on access doesn't cause a recursion error. 1177
Revert changes to ~loaders.PackageLoader from 2.10 which removed the dependency on setuptools and pkg_resources, and added limited support for namespace packages. The changes caused issues when using Pytest. Due to the difficulty in supporting Python 2 and 451 simultaneously, the changes are reverted until 3.0. 1182
Fix line numbers in error messages when newlines are stripped. 1178
The special namespace() assignment object in templates works in async environments. 1180
Fix whitespace being removed before tags in the middle of lines when lstrip_blocks is enabled. 1138
~nativetypes.NativeEnvironment doesn't evaluate intermediate strings during rendering. This prevents early evaluation which could change the value of an expression. 1186
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Bumps jinja2 from 2.11.1 to 2.11.3. This update includes a security fix.
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Commits
cf21539release version 2.11.315ef8f0Merge pull request #1343 from pallets/urlize-speedupef658dcspeed up urlize matchingeeca0feMerge pull request #1207 from mhansen/patch-12dd7691Merge pull request #1209 from mhansen/patch-34892940do_dictsort: update example ready to copy/paste7db7d33api.rst: bugfix in docs, import PackageLoader9ec465bfix changelog header737a4cdrelease version 2.11.2179df6bMerge pull request #1190 from pallets/native-evalDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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