1. Ubuntu Security Notices
  2. USN-5215-1

USN-5215-1: NLTK vulnerability

Publication date

10 January 2022

Overview

NLTK could be made to crash if it received specially crafted input.

Releases

Packages

  • nltk - Natural Language Toolkit

Details

Srikantha Prathi discovered that NLTK incorrectly handled specially crafted input.
An attacker could use this vulnerability to cause a denial of service.

Srikantha Prathi discovered that NLTK incorrectly handled specially crafted input.
An attacker could use this vulnerability to cause a denial of service.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.04 focal python3-nltk –  3.4.5-2ubuntu0.1~esm1  
18.04 bionic python-nltk –  3.2.5-1ubuntu0.1+esm1  
python3-nltk –  3.2.5-1ubuntu0.1+esm1  
16.04 xenial python-nltk –  3.1-1ubuntu0.1+esm1  
python3-nltk –  3.1-1ubuntu0.1+esm1  

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References

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