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CVE-2020-7070

Published: 2 October 2020

In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23 and 7.4.x below 7.4.11, when PHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-8184 for more information.

Notes

AuthorNote
sbeattie
PEAR issues should go against php-pear as of xenial

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
php5
Launchpad, Ubuntu, Debian
bionic Does not exist

trusty
Released (5.5.9+dfsg-1ubuntu4.29+esm13)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial Does not exist

groovy Does not exist

focal Does not exist

Patches:
upstream: https://github.com/microsoft/php-src/commit/21babd0059d6661573b44349d5ee5589677b9645
php7.0
Launchpad, Ubuntu, Debian
groovy Does not exist

upstream Needs triage

trusty Does not exist

bionic Does not exist

xenial
Released (7.0.33-0ubuntu0.16.04.16)
focal Does not exist

php7.2
Launchpad, Ubuntu, Debian
bionic
Released (7.2.24-0ubuntu0.18.04.7)
focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

php7.4
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (7.4.3-4ubuntu2.4)
groovy
Released (7.4.9-1ubuntu1.1)
trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N