Vulnerability identifier: #VU16123

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2015-4148

CWE-ID: CWE-843

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

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

The weakness exists due to type confusion in do_soap_call function in ext/soap/soap.c in PHP before 5.4.39, 5.5.x before 5.5.23, and 5.6.x before 5.6.7 does not verify that the uri property is a string. A remote attacker can trigger memory corruption and obtain sensitive information by providing crafted serialized data with an int data type.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 5.4.0 - 5.4.38, 5.5.0 - 5.5.22, 5.6.0 - 5.6.6

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External links
http://bugs.php.net/bug.php?id=69085

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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.