A security vulnerability has been detected in TRENDnet TEW-WLC100P 12.07b01. Affected by this vulnerability is an unknown functionality of the file /sbin/netifd of the component DHCP blobmsg Handler. The manipulation leads to stack-based buffer overflow. The attack must be carried out from within the local network. The exploit has been disclosed publicly and may be used.

In the configuration file of racoon in the TRENDnet TEW-WLC100P 2.03b03, the first item of exchagemode is set to aggressive. Aggressive mode in IKE Phase 1 exposes identity information in plaintext, is vulnerable to offline dictionary attacks, and lacks flexibility in negotiating security parameters.

In TRENDnet TEW-WLC100P 2.03b03, the idontcareaboutsecurityanduseaggressivemodepsk option is enabled in the strongSwan configuration file, so that IKE Responders are allowed to use IKEv1 Aggressive Mode with Pre-Shared Keys to conduct offline attacks on the openly transmitted hash of the PSK.