CVE-2019-19824 : Exploit Details and Defense Strategies
Learn about CVE-2019-19824 affecting TOTOLINK Realtek SDK routers. Find out how an attacker can execute arbitrary commands, impacting various router models.
A vulnerability has been identified in certain TOTOLINK Realtek SDK based routers, allowing an authenticated attacker to execute arbitrary commands in the device's operating system.
Understanding CVE-2019-19824
This CVE affects various TOTOLINK router models, potentially granting an attacker full control over the device.
What is CVE-2019-19824?
- The vulnerability enables an authenticated attacker to execute arbitrary OS commands through the sysCmd parameter in the boafrm/formSysCmd URI.
- The attacker can exploit this issue even if the graphical user interface (syscmd.htm) is inaccessible.
The Impact of CVE-2019-19824
- Successful exploitation allows the attacker to gain full control over the internal operations of the affected routers.
- Models impacted include A3002RU, A702R, N301RT, N302R, N300RT, N200RE, N150RT, and N100RE.
Technical Details of CVE-2019-19824
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
- The vulnerability allows for the execution of arbitrary commands in the device's OS.
Affected Systems and Versions
- A3002RU (up to version 2.0.0)
- A702R (up to version 2.1.3)
- N301RT (up to version 2.1.6)
- N302R (up to version 3.4.0)
- N300RT (up to version 3.4.0)
- N200RE (up to version 4.0.0)
- N150RT (up to version 3.4.0)
- N100RE (up to version 3.4.0)
Exploitation Mechanism
- The vulnerability is exploited by manipulating the sysCmd parameter in the boafrm/formSysCmd URI.
Mitigation and Prevention
Protecting systems from this vulnerability is crucial for maintaining security.
Immediate Steps to Take
- Apply security patches provided by the vendor.
- Restrict network access to the routers.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update router firmware to the latest versions.
- Implement strong authentication mechanisms.
- Conduct regular security audits and assessments.
Patching and Updates
- Regularly check for firmware updates from TOTOLINK.
- Apply patches promptly to mitigate the risk of exploitation.