Vulnerability identifier: #VU13915

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14883

CWE-ID: CWE-122

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 integer overflow when processing exif_read_data in any 32-bit system. A remote attacker can trigger heap-based buffer overflow in exif_thumbnail_extract of exif.c and cause the service to crash.

Mitigation
The vulnerability is addressed in the versions 5.6.37, 7.0.31, 7.1.20, 7.2.8.

Vulnerable software versions

PHP: 7.2.0 - 7.2.7, 5.6.36, 7.0.30, 7.1.19

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External links
http://bugs.php.net/bug.php?id=76423

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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.