CVE Number – CVE-2019-9165
A vulnerability in the Nagios XI API could allow an unauthenticated, remote attacker to conduct an SQL injection attack on a targeted system.
The vulnerability is due to insufficient validation of user-supplied input submitted to the affected software. An attacker could exploit this vulnerability by making an API call using fusekeys and a malicious user ID to the targeted system. A successful exploit could allow the attacker to conduct an SQL injection attack, which could be used to conduct further attacks.
Nagios has confirmed the vulnerability and released software updates.
- To exploit this vulnerability, the attacker must make an API call that submits malicious input to the targeted system, making exploitation more difficult in environments that restrict network access from untrusted sources.
- Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Administrators can help protect affected systems from external attacks by using a solid firewall strategy.
Administrators are advised to monitor affected systems.
- Nagios has released a security advisory and a changelog at the following links: CVE-2019-9165 and 5.5.11 – 02/28/2019
- Nagios has released software updates at the following link: Nagios XI 5.5.11
Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.