CVE-2017-12934

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

18/08/2017

Last modified:

20/04/2025

Description

ext/standard/var_unserializer.re in PHP 7.0.x before 7.0.21 and 7.1.x before 7.1.7 is prone to a heap use after free while unserializing untrusted data, related to the zval_get_type function in Zend/zend_types.h. Exploitation of this issue can have an unspecified impact on the integrity of PHP.

Impact

Vector 3.x

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

Base Score 3.x

7.50

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:php:php:7.0.0:::::::*
cpe:2.3:a:php:php:7.0.1:::::::*
cpe:2.3:a:php:php:7.0.2:::::::*
cpe:2.3:a:php:php:7.0.3:::::::*
cpe:2.3:a:php:php:7.0.4:::::::*
cpe:2.3:a:php:php:7.0.5:::::::*
cpe:2.3:a:php:php:7.0.6:::::::*
cpe:2.3:a:php:php:7.0.7:::::::*
cpe:2.3:a:php:php:7.0.8:::::::*
cpe:2.3:a:php:php:7.0.9:::::::*
cpe:2.3:a:php:php:7.0.10:::::::*
cpe:2.3:a:php:php:7.0.11:::::::*
cpe:2.3:a:php:php:7.0.12:::::::*
cpe:2.3:a:php:php:7.0.13:::::::*
cpe:2.3:a:php:php:7.0.14:::::::*

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:a:php:php:7.0.0:::::::*
cpe:2.3:a:php:php:7.0.1:::::::*
cpe:2.3:a:php:php:7.0.2:::::::*
cpe:2.3:a:php:php:7.0.3:::::::*
cpe:2.3:a:php:php:7.0.4:::::::*
cpe:2.3:a:php:php:7.0.5:::::::*
cpe:2.3:a:php:php:7.0.6:::::::*
cpe:2.3:a:php:php:7.0.7:::::::*
cpe:2.3:a:php:php:7.0.8:::::::*
cpe:2.3:a:php:php:7.0.9:::::::*
cpe:2.3:a:php:php:7.0.10:::::::*
cpe:2.3:a:php:php:7.0.11:::::::*
cpe:2.3:a:php:php:7.0.12:::::::*
cpe:2.3:a:php:php:7.0.13:::::::*
cpe:2.3:a:php:php:7.0.14:::::::*

CVE-2017-12934

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools