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CVE-2018-14647

Published: 24 September 2018

Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
python2.7
Launchpad, Ubuntu, Debian
bionic
Released (2.7.15~rc1-1ubuntu0.1)
cosmic Not vulnerable
(2.7.15-4ubuntu4)
disco Not vulnerable
(2.7.15-4ubuntu4)
eoan Not vulnerable
(2.7.15-4ubuntu4)
focal Not vulnerable
(2.7.15-4ubuntu4)
groovy Not vulnerable
(2.7.15-4ubuntu4)
hirsute Not vulnerable
(2.7.15-4ubuntu4)
impish Not vulnerable
(2.7.15-4ubuntu4)
jammy Not vulnerable
(2.7.15-4ubuntu4)
precise
Released (2.7.3-0ubuntu3.11)
trusty
Released (2.7.6-8ubuntu0.5)
upstream Needs triage

xenial
Released (2.7.12-1ubuntu0~16.04.4)
Patches:
upstream: https://github.com/python/cpython/commit/18b20bad75b4ff0486940fba4ec680e96e70f3a2


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

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty
Released (3.4.3-1ubuntu1~14.04.7)
upstream Needs triage

xenial Does not exist

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

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Needed

upstream Needs triage

xenial
Released (3.5.2-2ubuntu0~16.04.5)
python3.6
Launchpad, Ubuntu, Debian
bionic
Released (3.6.7-1~18.04)
cosmic Not vulnerable
(3.6.7-1~18.10)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

Patches:

upstream: https://github.com/python/cpython/commit/f7666e828cc3d5873136473ea36ba2013d624fa1

python3.7
Launchpad, Ubuntu, Debian
bionic
Released (3.7.1-1~18.04)
cosmic Not vulnerable
(3.7.1-1~18.10)
disco Not vulnerable
(3.7.1-1)
eoan Not vulnerable
(3.7.1-1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (3.7.0-7)
xenial Does not exist

Patches:


upstream: https://github.com/python/cpython/commit/470a435f3b42c9be5fdb7f7b04f3df5663ba7305