A vulnerability has been found in TOTOLINK Realtek SDK (unknown version) and classified as critical. Affected by this vulnerability is an unknown code block of the file boafrm/formSysCmd. The manipulation of the argument sysCmd as part of a Parameter leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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, and N100RE through 3.4.0.

The weakness was presented 01/27/2020 as not defined mailinglist post (Full-Disclosure). The advisory is shared at seclists.org. This vulnerability is known as CVE-2019-19824 since 12/16/2019. The attack can be launched remotely. The requirement for exploitation is a single authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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• TOTOLINK

Name

• Realtek SDK

License

• commercial

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CPE 2.2info

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