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CVE-2023-0568

Published: 16 February 2023

In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, core path resolution function allocate buffer one byte too small. When resolving paths with lengths close to system MAXPATHLEN setting, this may lead to the byte after the allocated buffer being overwritten with NUL value, which might lead to unauthorized data access or modification.

Priority

Medium

Cvss 3 Severity Score

8.1

Score breakdown

Status

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

bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

upstream Needs triage

trusty Needed

php7.0
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (7.0.33-0ubuntu0.16.04.16+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
jammy Does not exist

php7.2
Launchpad, Ubuntu, Debian
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

bionic
Released (7.2.24-0ubuntu0.18.04.17)
php7.4
Launchpad, Ubuntu, Debian
bionic Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

focal
Released (7.4.3-4ubuntu2.18)
php8.1
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

trusty Does not exist

xenial Does not exist

upstream
Released (8.1.16)
jammy
Released (8.1.2-1ubuntu2.11)
kinetic
Released (8.1.7-1ubuntu3.3)
lunar
Released (8.1.12-1ubuntu4)
mantic Does not exist

Patches:
upstream: https://github.com/php/php-src/commit/ec10b28d64decbc54aa1e585dce580f0bd7a5953

Severity score breakdown

Parameter Value
Base score 8.1
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H