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CVE-2020-8492

Published: 30 January 2020

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

Priority

Low

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
python3.4
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

trusty
Released (3.4.3-1ubuntu1~14.04.7+esm6)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial Does not exist

impish Does not exist

hirsute Does not exist

jammy Does not exist

lunar Does not exist

groovy Does not exist

kinetic Does not exist

upstream Needs triage

mantic Does not exist

python3.5
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

trusty Needed

upstream Needs triage

xenial
Released (3.5.2-2ubuntu0~16.04.10)
impish Does not exist

hirsute Does not exist

jammy Does not exist

lunar Does not exist

groovy Does not exist

kinetic Does not exist

mantic Does not exist

python3.6
Launchpad, Ubuntu, Debian
bionic
Released (3.6.9-1~18.04ubuntu1)
eoan Does not exist

focal Does not exist

trusty Does not exist

impish Does not exist

hirsute Does not exist

jammy Does not exist

lunar Does not exist

groovy Does not exist

kinetic Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

Patches:
upstream: https://github.com/python/cpython/commit/69cdeeb93e0830004a495ed854022425b93b3f3e


python3.7
Launchpad, Ubuntu, Debian
impish Does not exist

hirsute Does not exist

lunar Does not exist

bionic
Released (3.7.5-2ubuntu1~18.04.2)
eoan
Released (3.7.5-2~19.10ubuntu1)
focal Does not exist

groovy Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

Patches:

upstream: https://github.com/python/cpython/commit/b57a73694e26e8b2391731b5ee0b1be59437388e

python3.8
Launchpad, Ubuntu, Debian
impish Does not exist

lunar Does not exist

bionic
Released (3.8.0-3ubuntu1~18.04.2)
eoan Ignored
(end of life)
focal
Released (3.8.2-1ubuntu1.1)
groovy
Released (3.8.2-1ubuntu1.1)
hirsute Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

Patches:


upstream: https://github.com/python/cpython/commit/ea9e240aa02372440be8024acb110371f69c9d41
python2.7
Launchpad, Ubuntu, Debian
hirsute Ignored
(end of life)
jammy Not vulnerable
(2.7.18-13ubuntu1)
lunar Does not exist

bionic
Released (2.7.17-1~18.04ubuntu1)
eoan Ignored
(end of life)
focal
Released (2.7.18-1~20.04.1)
groovy Ignored
(end of life)
impish Ignored
(end of life)
kinetic Not vulnerable
(2.7.18-13ubuntu1)
trusty
Released (2.7.6-8ubuntu0.6+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (2.7.12-1ubuntu0~16.04.11)
mantic Does not exist

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H