#VU13920 Error handling in PHP

Vulnerability identifier: #VU13920

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-388

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 a fatal 'Illegal string offset' error when using array assignment on a string reference. A remote attacker can use an error handler that converts errors to exceptions and cause the service to hang.

Mitigation
The vulnerability is addressed in the versions 7.1.20, 7.2.8.

Vulnerable software versions

PHP: 7.1.19, 7.2.0 - 7.2.7

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External links
https://bugs.php.net/bug.php?id=76534

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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.