Remote code execution in Python NLTK library



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-39705
CWE-ID CWE-502
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Natural Language Toolkit
Web applications / Modules and components for CMS

Vendor nltk.org

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Deserialization of Untrusted Data

EUVDB-ID: #VU96903

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-39705

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data within the pickle module. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Natural Language Toolkit: 2.0.1 - 3.8.1

CPE2.3 External links

https://github.com/nltk/nltk/issues/3266
https://github.com/nltk/nltk/issues/2522
https://www.vicarius.io/vsociety/posts/rce-in-python-nltk-cve-2024-39705-39706


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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