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CVE-2021-42771

Good to know:

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Date: October 20, 2021

Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to code execution.

Language: Python

Severity Score

Related Resources (14)

https://www.debian.org/security/2021/dsa-5018
https://nvd.nist.gov/vuln/detail/CVE-2021-42771
https://github.com/pypa/advisory-database/tree/main/vulns/babel/PYSEC-2021-421.yaml
https://access.redhat.com/security/cve/CVE-2021-42771
https://github.com/python-babel/babel/commit/412015ef642bfcc0d8ba8f4d05cdbb6aac98d9b3
https://github.com/python-babel/babel/pull/782
https://lists.debian.org/debian-lts/2021/10/msg00040.html
https://github.com/advisories/GHSA-h4m5-qpfp-3mpv
https://www.tenable.com/security/research/tra-2021-14
https://github.com/python-babel/babel
https://security-tracker.debian.org/tracker/CVE-2021-42771
https://lists.debian.org/debian-lts-announce/2021/10/msg00018.html
https://security.alpinelinux.org/vuln/CVE-2021-42771
https://www.mend.io/vulnerability-database/CVE-2021-42771

Severity Score

Weakness Type (CWE)

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-22

Top Fix

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Upgrade to version babel - 2.9.1

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CVSS v3.1

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

CVSS v2

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

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