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CVE-2021-3828

Published: 27 September 2021

nltk is vulnerable to Inefficient Regular Expression Complexity

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
nltk
Launchpad, Ubuntu, Debian
bionic
Released (3.2.5-1ubuntu0.1+esm1)
Available with Ubuntu Pro
focal
Released (3.4.5-2ubuntu0.1~esm1)
Available with Ubuntu Pro
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy
Released (3.6.5-1)
kinetic
Released (3.6.5-1)
lunar
Released (3.6.5-1)
mantic
Released (3.6.5-1)
noble
Released (3.6.5-1)
trusty Not vulnerable
(code not present)
upstream
Released (3.6.4)
xenial
Released (3.1-1ubuntu0.1+esm1)
Available with Ubuntu Pro
Patches:
upstream: https://github.com/nltk/nltk/commit/277711ab1dec729e626b27aab6fa35ea5efbd7e6

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H