Vulnerability identifier: #VU12258

Vulnerability risk: Low

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-10549

CWE-ID: CWE-119

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 in exif_read_data() function due to an out-of-bounds read while processing crafted JPEG data. A remote attacker can supply a specially image file, trigger heap-based buffer overflow in exif_iif_add_value and cause the service to crash.

Mitigation
The vulnerability is addressed in the following versions: 5.6.36, 7.1.17, 7.2.5 and 7.0.30.

Vulnerable software versions

PHP: 7.2.0 - 7.2.4, 7.0.0 - 7.0.29, 7.1.0 - 7.1.16, 5.6.0 - 5.6.35, 5.5.6

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External links
http://bugs.php.net/bug.php?id=76130

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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.