CVE-2015-6834

HIGH

Description

Multiple use-after-free vulnerabilities in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 allow remote attackers to execute arbitrary code via vectors related to (1) the Serializable interface, (2) the SplObjectStorage class, and (3) the SplDoublyLinkedList class, which are mishandled during unserialization.

References

http://php.net/ChangeLog-5.php

http://www.debian.org/security/2015/dsa-3358

http://www.securityfocus.com/bid/76649

http://www.securitytracker.com/id/1033548

https://bugs.php.net/bug.php?id=70172

https://bugs.php.net/bug.php?id=70365

https://bugs.php.net/bug.php?id=70366

https://security.gentoo.org/glsa/201606-10

Details

Source: MITRE

Published: 2016-05-16

Updated: 2017-11-04

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL