CVE-2022-26991 Explained : Impact and Mitigation

Arris routers SBR-AC1900P 1.0.7-B05, SBR-AC3200P 1.0.7-B05, and SBR-AC1200P 1.0.5-B05 have been found to have a command injection vulnerability in the ntp function through the TimeZone parameter. This flaw enables malicious actors to run arbitrary commands by sending a specially crafted request.

Understanding CVE-2022-26991

This section provides an overview of the CVE-2022-26991 vulnerability affecting Arris routers.

What is CVE-2022-26991?

The CVE-2022-26991 vulnerability is a command injection security issue identified in Arris routers SBR-AC1900P, SBR-AC3200P, and SBR-AC1200P. Attackers can exploit this flaw to execute unauthorized commands through a manipulated request.

The Impact of CVE-2022-26991

The impact of this vulnerability is significant as it allows threat actors to gain unauthorized access and execute arbitrary commands on affected Arris routers, compromising the security and integrity of the devices and the network.

Technical Details of CVE-2022-26991

This section delves into the technical specifics of CVE-2022-26991.

Vulnerability Description

The vulnerability resides in the ntp function of Arris routers and is triggered by the TimeZone parameter. By exploiting this weakness, attackers can inject malicious commands into the system, posing a serious security risk.

Affected Systems and Versions

Arris routers impacted by CVE-2022-26991 include SBR-AC1900P 1.0.7-B05, SBR-AC3200P 1.0.7-B05, and SBR-AC1200P 1.0.5-B05. Users of these versions are urged to take immediate action to mitigate the risk.

Exploitation Mechanism

Cybercriminals can exploit the command injection vulnerability by sending a carefully crafted request via the TimeZone parameter. This allows them to execute arbitrary commands within the system, potentially leading to unauthorized access and control.

Mitigation and Prevention

This section outlines measures to address and prevent CVE-2022-26991.

Immediate Steps to Take

Users of affected Arris routers should apply security patches provided by the vendor promptly. It is essential to ensure that devices are updated to the latest firmware version to eliminate the vulnerability.

Long-Term Security Practices

In addition to patching, implementing security best practices such as network segmentation, regularly updating firmware, and monitoring for unusual activities can enhance the overall security posture of the network.

Patching and Updates

Regularly check for firmware updates and patches released by Arris for the affected router models. Timely installation of updates is crucial to mitigate the risk posed by CVE-2022-26991 and other potential vulnerabilities.