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.
Published 2017-08-18 03:29:00
Updated 2018-05-04 01:29:04
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Threat overview for CVE-2017-12934

Top countries where our scanners detected CVE-2017-12934
Top open port discovered on systems with this issue 80
IPs affected by CVE-2017-12934 18,633
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2017-12934!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2017-12934

0.30%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 65 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-12934

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:N/I:P/A:N
10.0
2.9
NIST
7.5
HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
3.9
3.6
NIST

CWE ids for CVE-2017-12934

  • Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-12934

Products affected by CVE-2017-12934

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