Null pointer dereference in Nagios - CVE-2018-13441
Published: July 23, 2018 / Updated: June 17, 2021
Vulnerability identifier: #VU14020
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-13441
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists in qh_help due to an error when handling malicious input. A local attacker can send a specially crafted payload to the listening UNIX socket, trigger NULL pointer dereference and cause the service to crash.
Affected software
Nagios
How to mitigate CVE-2018-13441
Install update from vendor's website.