CVE-2021-32838: Regular Expression Denial of Service in flask-restx
First published: Wed Sep 08 2021(Updated: )
Flask RESTX contains a regular expression that is vulnerable to [ReDoS](https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS) (Regular Expression Denial of Service) in `email_regex`.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Flask-restx Project Flask-restx | <0.5.1 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| pip/flask-restx | <0.5.1 | 0.5.1 |
| <0.5.1 | ||
| =33 | ||
| =34 |
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Reference Links
- https://github.com/advisories/GHSA-3q6g-vf58-7m4g (Advisory)
- https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51
- https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da
- https://github.com/python-restx/flask-restx/issues/372
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/
- https://pypi.org/project/flask-restx/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/
- https://github.com/python-restx/flask-restx/security/advisories/GHSA-3q6g-vf58-7m4g
- https://nvd.nist.gov/vuln/detail/CVE-2021-32838
- https://github.com/pypa/advisory-database/tree/main/vulns/flask-restx/PYSEC-2021-325.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3
- https://pypi.org/project/flask-restx
- collector/nvd-index
- agent/author
- agent/type
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/remedy
- agent/references
- agent/weakness
- agent/last-modified-date
- agent/title
- agent/description
- collector/github-advisory
- source/GitHub
- alias/GHSA-3q6g-vf58-7m4g
- alias/CVE-2021-32838
- agent/software-canonical-lookup
- agent/softwarecombine
- agent/tags
- agent/event
- collector/nvd-cve
- source/NVD
- collector/github-advisory-latest
- vendor/flask-restx project
- canonical/flask-restx project flask-restx
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/33
- version/fedoraproject fedora/34
- package-manager/pip