RIPd in Quagga 0.98 and 0.99 before 20060503 does not properly implement configurations that (1) disable RIPv1 or (2) require plaintext or MD5 authentication, which allows remote attackers to obtain sensitive information (routing state) via REQUEST packets such as SEND UPDATE.
Quagga Routing Software Suite < 0.99.3 - Authentication Bypass
RIPd in Quagga 0.98 and 0.99 before 20060503 does not properly enforce RIPv2 authentication requirements, which allows remote attackers to modify routing state via RIPv1 RESPONSE packets.
The BT Voyager 2000 Wireless ADSL Router has a default public SNMP community name, which allows remote attackers to obtain sensitive information such as the password, which is stored in plaintext.