#VU8968 Out-of-bounds read in PHP - CVE-2017-16642

Vulnerability identifier: #VU8968

Vulnerability risk: Low

CVSSv4.0: 7.7 [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:P/U:Clear]

CVE-ID: CVE-2017-16642

CWE-ID: CWE-125

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 cause DoS condition on the target system.

The weakness exists due to out-of-bounds read in timelib_meridian(). A remote attacker can cause the application to crash.

Mitigation
Update to version 7.0.25 or 7.1.11.

Vulnerable software versions

PHP: 7.0.0 - 7.0.24, 7.1.0 - 7.1.10

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External links
https://bugs.php.net/bug.php?id=75055

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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.