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CVE-2019-20907

Published: 13 July 2020

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
python2.7
Launchpad, Ubuntu, Debian
bionic
Released (2.7.17-1~18.04ubuntu1.1)
eoan Ignored
(end of life)
trusty
Released (2.7.6-8ubuntu0.6+esm6)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (2.7.12-1ubuntu0~16.04.12)
groovy Ignored
(end of life)
hirsute Ignored
(end of life)
focal
Released (2.7.18-1~20.04.1)
impish Ignored
(end of life)
jammy Not vulnerable
(2.7.18-13ubuntu1)
kinetic Not vulnerable
(2.7.18-13ubuntu1)
lunar Does not exist

mantic Does not exist

python3.4
Launchpad, Ubuntu, Debian
bionic Does not exist

impish Does not exist

hirsute Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty
Released (3.4.3-1ubuntu1~14.04.7+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial Does not exist

mantic Does not exist

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

hirsute Does not exist

bionic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Needs triage

upstream Needs triage

xenial
Released (3.5.2-2ubuntu0~16.04.11)
mantic Does not exist

python3.6
Launchpad, Ubuntu, Debian
impish Does not exist

hirsute Does not exist

bionic
Released (3.6.9-1~18.04ubuntu1.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

jammy Does not exist

kinetic Does not exist

lunar 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/47a2955589bdb1a114d271496ff803ad73f954b8


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

hirsute Does not exist

bionic Needed

eoan Ignored
(end of life)
focal Does not exist

groovy Does not exist

jammy Does not exist

kinetic Does not exist

lunar 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/79c6b602efc9a906c8496f3d5f4d54c54b48fa06

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

focal
Released (3.8.2-1ubuntu1.2)
hirsute Does not exist

bionic Needed

eoan Ignored
(end of life)
groovy Not vulnerable
(3.8.5-1)
jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream
Released (3.8.5-1)
xenial Does not exist

mantic Does not exist

Patches:


upstream: https://github.com/python/cpython/commit/c55479556db015f48fc8bbca17f64d3e65598559

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