#VU16019 Null pointer dereference in PHP - CVE-2018-19396
Published: November 22, 2018
Vulnerability identifier: #VU16019
Vulnerability risk: Low
CVSSv4.0: 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:P/U:Clear
CVE-ID: CVE-2018-19396
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
PHP
PHP
Software vendor:
PHP Group
PHP Group
Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to NULL pointer dereference condition that exists in the ext/standard/var_unserializer.c file when an unserialize call is made for the com, dotnet, or variant class. A remote attacker can send a specially crafted request that submits malicious input, trigger a NULL pointer dereference condition and cause the software to crash.
Remediation
Install update from vendor's website.