CVE-2015-6835

Published: May 16, 2016Modified: May 6, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

The session deserializer in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 mishandles multiple php_var_unserialize calls, which allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted session content.

Affected (63)

Products: Php: Php

Php

1 product

Php

Configuration A

21 vulnerable

Vulnerable Software	Affected Versions
Php Php	Version 5.6.0 alpha1
Php Php	Version 5.6.0 alpha2
Php Php	Version 5.6.0 alpha3
Php Php	Version 5.6.0 alpha4
Php Php	Version 5.6.0 alpha5
Php Php	Version 5.6.0 beta1
Php Php	Version 5.6.0 beta2
Php Php	Version 5.6.0 beta3
Php Php	Version 5.6.0 beta4
Php Php	Version 5.6.10
Php Php	Version 5.6.11
Php Php	Version 5.6.12
Php Php	Version 5.6.1
Php Php	Version 5.6.2
Php Php	Version 5.6.3
Php Php	Version 5.6.4
Php Php	Version 5.6.5
Php Php	Version 5.6.6
Php Php	Version 5.6.7
Php Php	Version 5.6.8
Php Php	Version 5.6.9

Configuration B

1 vulnerable

Vulnerable Software	Affected Versions
Php Php	Up to 5.4.44

Configuration C

41 vulnerable

Vulnerable Software	Affected Versions
Php Php	Version 5.5.0
Php Php	Version 5.5.0 alpha1
Php Php	Version 5.5.0 alpha2
Php Php	Version 5.5.0 alpha3
Php Php	Version 5.5.0 alpha4
Php Php	Version 5.5.0 alpha5
Php Php	Version 5.5.0 alpha6
Php Php	Version 5.5.0 beta1
Php Php	Version 5.5.0 beta2
Php Php	Version 5.5.0 beta3
Php Php	Version 5.5.0 beta4
Php Php	Version 5.5.0 rc1
Php Php	Version 5.5.0 rc2
Php Php	Version 5.5.10
Php Php	Version 5.5.11
Php Php	Version 5.5.12
Php Php	Version 5.5.13
Php Php	Version 5.5.14
Php Php	Version 5.5.15
Php Php	Version 5.5.16
Php Php	Version 5.5.17
Php Php	Version 5.5.18
Php Php	Version 5.5.19
Php Php	Version 5.5.1
Php Php	Version 5.5.20
Php Php	Version 5.5.21
Php Php	Version 5.5.22
Php Php	Version 5.5.23
Php Php	Version 5.5.24
Php Php	Version 5.5.25
Php Php	Version 5.5.26
Php Php	Version 5.5.27
Php Php	Version 5.5.28
Php Php	Version 5.5.2
Php Php	Version 5.5.3
Php Php	Version 5.5.4
Php Php	Version 5.5.5
Php Php	Version 5.5.6
Php Php	Version 5.5.7
Php Php	Version 5.5.8
Php Php	Version 5.5.9