Code Injection in ThinkPHP5 Framework - #VU16655
Published: December 22, 2018
Vulnerability identifier: #VU16655
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:A/U:Amber
CVE-ID: N/A
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: ThinkPHP
Affected software:
ThinkPHP5 Framework
ThinkPHP5 Framework
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary PHP code on the target system.
The vulnerability exists due to improper input validation in "/index.php" script when processing data passed via the "vars[1][]" HTTP GET parameter. A remote attacker can send a specially crafted request to the vulnerable application and execute arbitrary PHP code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: this vulnerability is being actively exploited in the wild in December 2018.
Remediation
Install updates from vendor's website.