CVE-2016-7479

Publication date 11 January 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

In all versions of PHP 7, during the unserialization process, resizing the 'properties' hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain arbitrary code execution.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
php5	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Fixed 5.5.9+dfsg-1ubuntu4.21
	12.04 LTS precise	Fixed 5.3.10-1ubuntu3.26
php7.0	16.10 yakkety	Fixed 7.0.15-0ubuntu0.16.10.2
	16.04 LTS xenial	Fixed 7.0.15-0ubuntu0.16.04.2
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
php5	Upstream: http://git.php.net/?p=php-src.git;a=commit;h=0426b916df396a23e5c34514e4f2f0627efdcdf0
php7.0	Upstream: http://git.php.net/?p=php-src.git;a=commit;h=0426b916df396a23e5c34514e4f2f0627efdcdf0 Upstream: http://git.php.net/?p=php-src.git;a=commit;h=b47c49d7a00bc34d7e0f3d72732f66e904da6fa7

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	9.8 · Critical
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3211-1
PHP vulnerabilities
23 February 2017

USN-3196-1
PHP vulnerabilities
14 February 2017