#VU16136 Use-after-free in PHP - CVE-2016-9137

Vulnerability identifier: #VU16136

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-9137

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to use-after-free error in the CURLFile implementation in ext/curl/curl_file.c in PHP before 5.6.27 and 7.x before 7.0.12. A remote attacker can cause a denial of service via specially crafted serialized data that is mishandled during __wakeup processing.

Mitigation
The vendor has issued the following versions to address this vulnerability: 5.6.27, 7.0.12.

Vulnerable software versions

PHP: 5.6.0 - 5.6.26, 7.0.0 - 7.0.11

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External links
https://bugs.php.net/bug.php?id=73147

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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.