Vulnerability identifier: #VU9405

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-284

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 weakness exists due to an error when modifing property name in __isset for BP_VAR_IS. A remote attacker can cause the service to crash.

Mitigation
Update to version 7.0.26 or 7.1.12.

Vulnerable software versions

PHP: 7.0.0 - 7.0.25, 7.1.0 - 7.1.11

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External links
http://bugs.php.net/bug.php?id=75420

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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.