CVE-2018-21113 : Security Advisory and Response

Unauthenticated attackers have the ability to carry out command injection on certain NETGEAR devices. This vulnerability affects models such as D6100, D7800, R6100, R7500, R7500v2, R7800, R8900, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, and WNDR4500v3.

Understanding CVE-2018-21113

This CVE involves unauthenticated command injection on specific NETGEAR devices.

What is CVE-2018-21113?

CVE-2018-21113 allows unauthenticated attackers to execute commands on vulnerable NETGEAR devices, potentially leading to unauthorized access and control.

The Impact of CVE-2018-21113

The vulnerability has a CVSS base score of 8.8, indicating a high severity level with significant impacts on confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2018-21113

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability enables unauthenticated attackers to perform command injection on specific NETGEAR models, potentially compromising the devices' security.

Affected Systems and Versions

The following NETGEAR models are affected by CVE-2018-21113:

D6100 (prior to version 1.0.0.58)
D7800 (prior to version 1.0.1.42)
R6100 (prior to version 1.0.1.28)
R7500 (prior to version 1.0.0.130)
R7500v2 (prior to version 1.0.3.36)
R7800 (prior to version 1.0.2.52)
R8900 (prior to version 1.0.4.12)
R9000 (prior to version 1.0.4.12)
WNDR3700v4 (prior to version 1.0.2.102)
WNDR4300 (prior to version 1.0.2.104)
WNDR4300v2 (prior to version 1.0.0.56)
WNDR4500v3 (prior to version 1.0.0.56)

Exploitation Mechanism

The vulnerability can be exploited by unauthenticated attackers to inject and execute arbitrary commands on the affected NETGEAR devices.

Mitigation and Prevention

Protecting systems from CVE-2018-21113 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by NETGEAR for the affected models.
Implement network segmentation to limit exposure of vulnerable devices.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update firmware and software to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and mitigate potential risks.

Patching and Updates

Ensure that all NETGEAR devices are running the latest firmware versions to mitigate the CVE-2018-21113 vulnerability.