Vulnerability identifier: #VU12901

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2016-9933

CWE-ID:

Exploitation vector: Network

Exploit availability:

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 the gdImageFillToBorder function in gd.c due to stack consumption. A remote attacker can submit a specially crafted imagefilltoborder call that triggers use of a negative color value and cause the service to crash.

Mitigation
Update libgd to 2.2.2 or PHP to 5.6.28 or 7.0.13.

Vulnerable software versions

PHP: 5.6.0 - 5.6.27, 7.0.0 - 7.0.12

---

Fixed software versions

CPE

• cpe:2.3:a:php_group:php:5.6.27:*:*:*:*:*:*:*

External links
http://www.php.net/ChangeLog-5.php
http://www.php.net/ChangeLog-7.php

---

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?