CVE-2017-12934
php: heap use after free in ext/standard/var_unserializer.re
Severity Score
7.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
ext/standard/var_unserializer.re en PHP en versiones 7.0.x anteriores a la 7.0.21 y versiones 7.1.x anteriores a la 7.1.7 es propenso a un uso de memoria dinámica antes de liberación (heap use after free) al deserializar datos que no son de confianza. Esto está relacionado con la función zval_get_type en Zend/zend_types.h. La explotación de este problema puede tener un impacto sin especificar en la integridad de PHP.
PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. The following packages have been upgraded to a later upstream version: rh-php70-php. Issues addressed include buffer overflow, cross site scripting, denial of service, heap overflow, remote file inclusion, and use-after-free vulnerabilities.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2017-08-17 CVE Reserved
- 2017-08-18 CVE Published
- 2024-08-05 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-416: Use After Free
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/100428 | Third Party Advisory | |
| https://bugs.php.net/bug.php?id=74101 | Issue Tracking |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://php.net/ChangeLog-7.php | 2018-05-04 | |
| https://access.redhat.com/errata/RHSA-2018:1296 | 2018-05-04 | |
| https://www.debian.org/security/2018/dsa-4080 | 2018-05-04 | |
| https://access.redhat.com/security/cve/CVE-2017-12934 | 2018-05-03 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1484839 | 2018-05-03 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.0 Search vendor "Php" for product "Php" and version "7.0.0" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.1 Search vendor "Php" for product "Php" and version "7.0.1" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.2 Search vendor "Php" for product "Php" and version "7.0.2" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.3 Search vendor "Php" for product "Php" and version "7.0.3" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.4 Search vendor "Php" for product "Php" and version "7.0.4" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.5 Search vendor "Php" for product "Php" and version "7.0.5" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.6 Search vendor "Php" for product "Php" and version "7.0.6" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.7 Search vendor "Php" for product "Php" and version "7.0.7" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.8 Search vendor "Php" for product "Php" and version "7.0.8" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.9 Search vendor "Php" for product "Php" and version "7.0.9" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.10 Search vendor "Php" for product "Php" and version "7.0.10" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.11 Search vendor "Php" for product "Php" and version "7.0.11" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.12 Search vendor "Php" for product "Php" and version "7.0.12" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.13 Search vendor "Php" for product "Php" and version "7.0.13" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.14 Search vendor "Php" for product "Php" and version "7.0.14" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.15 Search vendor "Php" for product "Php" and version "7.0.15" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.16 Search vendor "Php" for product "Php" and version "7.0.16" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.17 Search vendor "Php" for product "Php" and version "7.0.17" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.18 Search vendor "Php" for product "Php" and version "7.0.18" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.19 Search vendor "Php" for product "Php" and version "7.0.19" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.20 Search vendor "Php" for product "Php" and version "7.0.20" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.0 Search vendor "Php" for product "Php" and version "7.1.0" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.1 Search vendor "Php" for product "Php" and version "7.1.1" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.2 Search vendor "Php" for product "Php" and version "7.1.2" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.3 Search vendor "Php" for product "Php" and version "7.1.3" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.4 Search vendor "Php" for product "Php" and version "7.1.4" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.5 Search vendor "Php" for product "Php" and version "7.1.5" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.6 Search vendor "Php" for product "Php" and version "7.1.6" | - |
Affected
| ||||||