CVE-2019-19824: totolink a3002ru_firmware OS Command Injection

Vulnerability summary

CVE-2019-19824 is a high (CVSS 9.0) OS Command Injection vulnerability in totolink a3002ru_firmware. EPSS estimates a 25.14% chance of exploitation in the next 30 days, higher than 97.9% of scored vulnerabilities. 4 public exploits are recorded.

Timeline

1. 27-01-2020
   PublishedVulnerability first disclosed.
2. 28-08-2024
   Last modifiedVulnerability information updated.

Description

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 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, N100RE through 3.4.0, and N302RE 2.0.2.

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.