Vulnerability identifier: #VU6169

Vulnerability risk: Low

CVSSv3.1: 6.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2011-5148

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Simple File Upload
Web applications / Modules and components for CMS

Vendor: Anders Wasen

Description
The vulnerability allows a remote attacker to execute arbitrary PHP code on the target system.

The weakness exists due to the improper validation of file extensions by the index.php script. A remote attacker can send a specially-crafted HTTP request, upload a malicious PHP script and execute arbitrary PHP code on the system.

Successful exploitation of the vulnerability results in arbitrary PHP code execution on the vulnerable system.

Mitigation
Update to version 1.3.5.

Vulnerable software versions

Simple File Upload: 1.0 - 1.3

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External links
http://docs.joomla.org/Vulnerable_Extensions_List#Simple_File_Upload_1.3

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Q & A

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, proof of concept for this vulnerability is available.