Description

Array Networks vAPV (version 8.3.2.17) and vxAG (version 9.2.0.34) appliances are affected by a privilege escalation vulnerability caused by a combination of hardcoded SSH credentials (or SSH private key) and insecure permissions on a startup script. The devices ship with a default SSH login or a hardcoded DSA private key, allowing an attacker to authenticate remotely with limited privileges. Once authenticated, an attacker can overwrite the world-writable /ca/bin/monitor.sh script with arbitrary commands. Since this script is executed with elevated privileges through the backend binary, enabling the debug monitor via backend -c "debug monitor on" triggers execution of the attacker's payload as root. This allows full system compromise.

Weaknesses 2

References 4

• packetstorm.news https://packetstorm.news/files/id/125761
• raw.githubusercontent.com https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/ssh/array_vxag_vapv_privkey_privesc.rb
• exploit-db.com https://www.exploit-db.com/exploits/32440
• vulncheck.com https://www.vulncheck.com/advisories/array-networks-vapv-vxag-default-credential-privilege-escalation

Remediation