The exploit was announced by Mark Maunder.
Vulnerable component: TimThumb
CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C
CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type
The vulnerability allows a remote attacker to execute arbitrary PHP code on the target system.
The vulnerability exists due to improper storing of content in the cache directory when processing input. A remote attacker can send a specially crafted HTTP request containing a white-listed domain in the src parameter, upload a malicious PHP script and execute arbitrary PHP code.
Successful exploitation of the vulnerability may allow an attacker to execute arbitrary PHP code on the vulnerable system.
Note: the vulnerability was being actively exploited.
- WordPress Plugin TimThumb 1.32 - Remote Code Execution [Exploit-DB]
- Multiple WordPress Plugins - 'timthumb.php' File Upload [Exploit-DB]