Use After Free in Php
CVE-2017-12934
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.
Vulnerability class: Use-After-Free
EPSS: 0.036 (88.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Php — versions 7.0.0, 7.0.1, 7.0.2
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory, Issue Tracking)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (vendor-advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-12934?
- CVE-2017-12934 is a high-severity vulnerability in Php, classified under Use After Free. CVSS score: 7.5/10. Published 2017-08-18.
- How severe is CVE-2017-12934?
- High severity. CVSS v3 base score is 7.5 out of 10.