Vulnerability identifier: #VU3035
Vulnerability risk: Critical
CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-434
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
TimThumb
Web applications /
Modules and components for CMS
Vendor: TimThumb
Description
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.
Mitigation
Update to version 2.0.
Vulnerable software versions
TimThumb: 1.99
External links
http://code.google.com/archive/p/timthumb/issues/212
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.