The remote service may be affected by multiple vulnerabilities.
According to its self-reported version number, the installation of Quagga listening on the remote host is affected by multiple vulnerabilities : - An information disclosure vulnerability in RIPD can be triggered by a REQUEST packet, such as SEND UPDATE, on hosts that disable RIPv1 or require plaintext or MD5 authentication. (CVE-2006-2223) - An authentication bypass vulnerability in RIPD may allow unauthenticated, remote attackers to modify routing state via RIPv1 RESPONSE packets. (CVE-2006-2224) - A denial of service vulnerability in Zebra can be triggered by a certain BGP command. (CVE-2006-2276)