High severity · published Oct 20, 2021
CVE-2021-42771
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
7.8
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BA
Babel · Pocoo
before 2.9.1 · source: NVD
DL
Debian Linux · Debian
10.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-42771
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-42771
Patch
https://github.com/python-babel/babel/pull/782
Mailing List
https://lists.debian.org/debian-lts-announce/2021/10/msg00018.html
Mailing List
https://lists.debian.org/debian-lts/2021/10/msg00040.html
Third Party Advisory
https://www.debian.org/security/2021/dsa-5018
Exploit
https://www.tenable.com/security/research/tra-2021-14
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