#VU5582 Arbitrary PHP code execution in Mt-phpincgi - CVE-2015-2945

Vulnerability identifier: #VU5582

Vulnerability risk: Critical

CVSSv4.0: 9.3 [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:Red]

CVE-ID: CVE-2015-2945

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mt-phpincgi
Web applications / Other software

Vendor: H-fj

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

The weakness exists due to improper validation of input when performing an unserialize() call. A remote attacker can send a specially crafted URL request, inject and execute arbitrary PHP code on the system.

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

Note: the vulnerability was being actively exploited.

Mitigation
Update to a patched version released after 2015-05-15.

Vulnerable software versions

Mt-phpincgi: All versions

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External links
https://www.h-fj.com/blog/archives/2015/05/15-112843.php

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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, a fully functional exploit for this vulnerability is available.