CVE-2019-19825 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://packetstormsecurity.com/files/156083/Realtek-SDK-Information-Disclosure-Code-Execution.html http://seclists.org/fulldisclosure/2020/Jan/36 http://seclists.org/fulldisclosure/2020/Jan/38 https://sploit.tech 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.

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8