Multiple Home GateWay/Hikari Denwa routers provided by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION are vulnerable to insufficient access restrictions for Device Setting pages. If this vulnerability is exploited, an attacker who identified WAN-side IPv6 address may access the products Device Setting page via WAN-side. Note that, the same products are also provided by NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION, but the vulnerability only affects products subscribed and used in NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION areas.
The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks.
If an attacker can cause the UI to display erroneous data, or to otherwise convince the user to display information that appears to come from a trusted source, then the attacker could trick the user into performing the wrong action. This is often a component in phishing attacks, but other kinds of problems exist. For example, if the UI is used to monitor the security state of a system or network, then omitting or obscuring an important indicator could prevent the user from detecting and reacting to a security-critical event. UI misrepresentation can take many forms: