Double free in PHP - #VU7357
Published: July 6, 2017
Vulnerability identifier: #VU7357
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: N/A
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PHP Group
Affected software:
PHP
PHP
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code.
The weakness exists due to double free. A remote attacker can create a node list using the DOMXPath query() or evaluate() functions, remove the nodes from the document by writing to nodeValue of an ancestor, trigger "double free or corruption" and execute arbitrary code with web server privileges.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists due to double free. A remote attacker can create a node list using the DOMXPath query() or evaluate() functions, remove the nodes from the document by writing to nodeValue of an ancestor, trigger "double free or corruption" and execute arbitrary code with web server privileges.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Update to version 7.0.21.