#VU31456 Input validation error in PHP - CVE-2015-8876

Vulnerability identifier: #VU31456

Vulnerability risk: Medium

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

CVE-ID: CVE-2015-8876

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and application crash) or trigger unintended method execution via crafted serialized data.

Mitigation
Update to version 5.6.12.

Vulnerable software versions

PHP: 5.6.0 - 5.6.11

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External links
https://rhn.redhat.com/errata/RHSA-2016-2750.html
https://www.php.net/ChangeLog-5.php
https://bugs.php.net/bug.php?id=70121

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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.