NetSight
critical9.8

CVE-2019-19825

On certain TOTOLINK Realtek SDK based routers, the CAPTCHA text can be retrieved via an {"topicurl":"setting/getSanvas"} POST to the boafrm/formLogin URI, lead…

Impact

On certain TOTOLINK Realtek SDK based routers, the CAPTCHA text can be retrieved via an {"topicurl":"setting/getSanvas"} POST to the boafrm/formLogin URI, leading to a CAPTCHA bypass. (Also, the CAPTCHA text is not needed once the attacker has determined valid credentials. The attacker can perform router actions via HTTP requests with Basic Authentication.) This affects A3002RU through 2.0.0, A702R through 2.1.3, N301RT through 2.1.6, N302R through 3.4.0, N300RT through 3.4.0, N200RE through 4.0.0, N150RT through 3.4.0, and N100RE through 3.4.0.

Affected products

VendorProductAffected versions
TotolinkA3002ru Firmware
through 2.0.0
TotolinkA702r Firmware
through 2.1.3
TotolinkN301rt Firmware
through 2.1.6
TotolinkN302r Firmware
through 3.4.0
TotolinkN300rt Firmware
through 3.4.0
TotolinkN200re Firmware
through 4.0.0
TotolinkN150rt Firmware
through 3.4.0
TotolinkN100re Firmware
through 3.4.0

Weakness classification

References