CVE Vulnerabilities

CVE-2016-4473

Use After Free

Published: Jun 08, 2017 | Modified: Apr 20, 2025
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
5.1 MODERATE
AV:N/AC:H/Au:N/C:P/I:P/A:P
RedHat/V3
Ubuntu
MEDIUM
root.io logo minimus.io logo echo.ai logo

/ext/phar/phar_object.c in PHP 7.0.7 and 5.6.x allows remote attackers to execute arbitrary code. NOTE: Introduced as part of an incomplete fix to CVE-2015-6833.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

NameVendorStart VersionEnd Version
PhpPhp5.6.0-alpha1 (including)5.6.0-alpha1 (including)
PhpPhp5.6.0-alpha2 (including)5.6.0-alpha2 (including)
PhpPhp5.6.0-alpha3 (including)5.6.0-alpha3 (including)
PhpPhp5.6.0-alpha4 (including)5.6.0-alpha4 (including)
PhpPhp5.6.0-alpha5 (including)5.6.0-alpha5 (including)
PhpPhp5.6.0-beta1 (including)5.6.0-beta1 (including)
PhpPhp5.6.0-beta2 (including)5.6.0-beta2 (including)
PhpPhp5.6.0-beta3 (including)5.6.0-beta3 (including)
PhpPhp5.6.0-beta4 (including)5.6.0-beta4 (including)
PhpPhp5.6.1 (including)5.6.1 (including)
PhpPhp5.6.2 (including)5.6.2 (including)
PhpPhp5.6.3 (including)5.6.3 (including)
PhpPhp5.6.4 (including)5.6.4 (including)
PhpPhp5.6.5 (including)5.6.5 (including)
PhpPhp5.6.6 (including)5.6.6 (including)
PhpPhp5.6.7 (including)5.6.7 (including)
PhpPhp5.6.8 (including)5.6.8 (including)
PhpPhp5.6.9 (including)5.6.9 (including)
PhpPhp5.6.10 (including)5.6.10 (including)
PhpPhp5.6.11 (including)5.6.11 (including)
PhpPhp5.6.12 (including)5.6.12 (including)
PhpPhp5.6.13 (including)5.6.13 (including)
PhpPhp5.6.14 (including)5.6.14 (including)
PhpPhp5.6.15 (including)5.6.15 (including)
PhpPhp5.6.16 (including)5.6.16 (including)
PhpPhp5.6.17 (including)5.6.17 (including)
PhpPhp5.6.18 (including)5.6.18 (including)
PhpPhp5.6.19 (including)5.6.19 (including)
PhpPhp5.6.20 (including)5.6.20 (including)
PhpPhp5.6.21 (including)5.6.21 (including)
PhpPhp5.6.22 (including)5.6.22 (including)
PhpPhp7.0.7 (including)7.0.7 (including)
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-php56-0:2.3-1.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-php56-php-0:5.6.25-1.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-php56-php-pear-1:1.9.5-4.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSRedHatrh-php56-0:2.3-1.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSRedHatrh-php56-php-0:5.6.25-1.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSRedHatrh-php56-php-pear-1:1.9.5-4.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-php56-0:2.3-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-php56-php-0:5.6.25-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-php56-php-pear-1:1.9.5-4.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSRedHatrh-php56-0:2.3-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSRedHatrh-php56-php-0:5.6.25-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSRedHatrh-php56-php-pear-1:1.9.5-4.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSRedHatrh-php56-0:2.3-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSRedHatrh-php56-php-0:5.6.25-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSRedHatrh-php56-php-pear-1:1.9.5-4.el7*
Php5Ubuntuupstream*

Potential Mitigations

References