TOTOLINK/Realtek Routers - CAPTCHA Bypass

On certain TOTOLINK Realtek SDK based routers, the CAPTCHA text can be retrieved via a POST request to the boafrm/formLogin URI with the JSON payload "topicurl":"setting/getSanvas". This allows an unauthenticated attacker to bypass CAPTCHA verification, gaining unauthorized access to restricted...

A week in security (August 23 – August 29)

Last week on Malwarebytes Labs: Patch now! Microsoft Exchange is being attacked via ProxyShell Realtek-based routers, smart devices are being gobbled up by a voracious botnet Criminals exploited weak checks and old tech to pull off vast COVID benefit fraud Mice “taking over the world!”, one Windo...

Design/Logic Flaw

On certain TOTOLINK Realtek SDK based routers, an authenticated attacker may execute arbitrary OS commands via the sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI syscmd.htm is not available. This allows for full control over the device's internals. This affects A3002RU through...