NULL pointer dereference in PHP - CVE-2013-7327
Published: November 27, 2018
Vulnerability identifier: #VU16079
CSH Severity: Low
CVSS v4.0: 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:U/U:Clear
CVE-ID: CVE-2013-7327
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PHP Group
Affected software:
PHP
PHP
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when the gdImageCrop function in ext/gd/gd.c in PHP 5.5.x before 5.5.9 does not check return value. A remote attacker can trigger NULL pointer dereference via invalid imagecrop arguments and cause the service to crash.
How to mitigate CVE-2013-7327
Install updates from vendor's website.