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CVE-2019-9947

Published: 23 March 2019

An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the path component of a URL that lacks a ? character) followed by an HTTP header or a Redis command. This is similar to the CVE-2019-9740 query string issue. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.

Notes

AuthorNote
mdeslaur
in certain python releases, introduced by:
https://github.com/python/cpython/commit/cc54c1c0d2d05fe7404ba64c53df4b1352ed2262

Same fix as CVE-2019-9740

Priority

Medium

Cvss 3 Severity Score

6.1

Score breakdown

Status

Package Release Status
python2.7
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(2.7.16-3)
bionic
Released (2.7.15-4ubuntu4~18.04.1)
cosmic Ignored
(end of life)
disco
Released (2.7.16-2ubuntu0.1)
eoan Not vulnerable
(2.7.16-3)
focal Not vulnerable
(2.7.16-3)
groovy Not vulnerable
(2.7.16-3)
impish Not vulnerable
(2.7.16-3)
jammy Not vulnerable
(2.7.16-3)
kinetic Not vulnerable
(2.7.16-3)
lunar Does not exist

trusty
Released (2.7.6-8ubuntu0.6+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (2.7.12-1ubuntu0~16.04.8)
mantic Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty
Released (3.4.3-1ubuntu1~14.04.7+esm2)
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
hirsute Does not exist

impish Does not exist

bionic Does not exist

cosmic Does not exist

disco 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 Deferred
(2019-04-10)
upstream Needs triage

xenial
Released (3.5.2-2ubuntu0~16.04.8)
mantic Does not exist

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

bionic
Released (3.6.8-1~18.04.2)
cosmic Ignored
(end of life)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute 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

python3.7
Launchpad, Ubuntu, Debian
bionic Needed

cosmic Ignored
(end of life)
disco
Released (3.7.3-2ubuntu0.1)
eoan Not vulnerable
(3.7.4-2ubuntu1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

impish 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

Severity score breakdown

Parameter Value
Base score 6.1
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N