#VU66467 Path traversal in Babel


Published: 2022-08-12

Vulnerability identifier: #VU66467

Vulnerability risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-42771

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Babel
Web applications / Modules and components for CMS

Vendor: The Babel Team

Description

The vulnerability allows a remote attacker to user compromise the affected system.

The vulnerability exists due to input validation error when processing directory traversal sequences within the locale .dat files in Babel.Locale. A remote user can load a malicious .dat file containing serialized Python objects and execute arbitrary code on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Babel: 2.0 - 2.9.0


External links
http://www.tenable.com/security/research/tra-2021-14
http://lists.debian.org/debian-lts/2021/10/msg00040.html
http://github.com/python-babel/babel/pull/782
http://lists.debian.org/debian-lts-announce/2021/10/msg00018.html
http://www.debian.org/security/2021/dsa-5018


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability