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CVE-2021-32838

Good to know:

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Date: September 20, 2021

Flask-RESTX (pypi package flask-restx) is a community driven fork of Flask-RESTPlus. Flask-RESTX before version 0.5.1 is vulnerable to ReDoS (Regular Expression Denial of Service) in email_regex. This is fixed in version 0.5.1.

Language: Python

Severity Score

Related Resources (15)

https://github.com/python-restx/flask-restx/issues/372
https://github.com/python-restx/flask-restx
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ
https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da
https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51
https://pypi.org/project/flask-restx
https://github.com/advisories/GHSA-3q6g-vf58-7m4g
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3
https://github.com/pypa/advisory-database/tree/main/vulns/flask-restx/PYSEC-2021-325.yaml
https://github.com/python-restx/flask-restx/security/advisories/GHSA-3q6g-vf58-7m4g
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/
https://pypi.org/project/flask-restx/
https://nvd.nist.gov/vuln/detail/CVE-2021-32838
https://www.mend.io/vulnerability-database/CVE-2021-32838

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

Inefficient Regular Expression Complexity

CWE-1333

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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