Use After Free in Php
CVE-2016-7479
In all versions of PHP 7, during the unserialization process, resizing the 'properties' hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain arbitrary code execution.
Vulnerability class: Use-After-Free
EPSS: 0.419 (98.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Php — versions 7.0.0, 7.0.1, 7.0.2
- N/a Php 7.x — versions PHP 7.x
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@checkpoint.com (Technical Description, Exploit, Third Party Advisory, x_refsource_MISC)
- cve@checkpoint.com (Technical Description, x_refsource_MISC)
- cve@checkpoint.com (Permissions Required, x_refsource_MISC, Issue Tracking)
- cve@checkpoint.com (x_refsource_REDHAT, vendor-advisory)
- cve@checkpoint.com (x_refsource_CONFIRM)
- cve@checkpoint.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@checkpoint.com (vdb-entry, x_refsource_SECTRACK)
- cve@checkpoint.com (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2016-7479?
- CVE-2016-7479 is a critical-severity vulnerability in Php, classified under Use After Free. CVSS score: 9.8/10. Published 2017-01-12.
- How severe is CVE-2016-7479?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-7479 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.