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USN-4106-1: NLTK vulnerability

20 August 2019

NLTK could be made to overwrite files.



  • nltk - Python libraries for natural language processing


Mike Salvatore discovered that NLTK mishandled crafted ZIP archives during
extraction. A remote attacker could use this vulnerability to write
arbitrary files to the filesystem

Update instructions

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

Ubuntu 19.04
Ubuntu 18.04
Ubuntu 16.04

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