CVE Number – CVE-2018-11786
A vulnerability in the sshd service in Apache Karaf could allow an authenticated, remote attacker to gain unauthorized access to a targeted system.
The vulnerability is due to improper security restrictions imposed by the affected software when the sshd service is used. An attacker who has Secure Shell (SSH) access to the Karaf console on an affected system could exploit this vulnerability to access or modify any file on the file system that the Karaf process user has access to. A successful exploit could be used to conduct further attacks.
Apache confirmed the vulnerability and released software updates.
To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement may reduce the likelihood of a successful exploit.
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.
Apache released a security advisory at the following link: CVE-2018-11786: Apache Karaf SSH RBAC security enforcement
Apache released software updates at the following link: Apache Karaf 4.2.0.M1 or later
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.