CVE-2021-23861 Explained : Impact and Mitigation

This CVE-2021-23861 involves the potential access to debug functions in Bosch VRM and BVMS, impacting the integrity and availability of the installed software. The vulnerability affects multiple products by Bosch.

Understanding CVE-2021-23861

CVE-2021-23861 addresses the issue of unauthorized users with administrative rights gaining access to extended debug functionality within Bosch VRM, potentially impacting software integrity and availability.

What is CVE-2021-23861?

The CVE-2021-23861 vulnerability allows an individual with administrative privileges to execute a specific command and access debug functions on Bosch VRM, affecting the integrity and availability of the software. The vulnerability also affects installations of DIVAR IP and BVMS with VRM.

The Impact of CVE-2021-23861

With a CVSSv3 base score of 6.5, this medium-severity vulnerability poses a high availability impact and high integrity impact. It requires high privileges and can be exploited over a network without user interaction.

Technical Details of CVE-2021-23861

The vulnerability is characterized by a low attack complexity and a network-based attack vector. The exploitation of this vulnerability can result in significant consequences for the availability and integrity of the affected systems.

Vulnerability Description

By executing a unique command, an unauthorized user with administrative rights can trigger extended debug functionality on the VRM system, potentially impacting the installed software's integrity or availability.

Affected Systems and Versions

The impacted products include BVMS versions less than or equal to 9.0.0, less than 11.0.0, and less than 10.0.2; DIVAR IP 7000 R2, DIVAR IP all-in-one 5000, DIVAR IP all-in-one 7000, and various versions of VRM.

Exploitation Mechanism

The vulnerability allows an attacker with high privileges to exploit the extended debug functionality, leading to potential integrity or availability issues within the affected Bosch products.

Mitigation and Prevention

To address CVE-2021-23861, immediate steps, long-term security practices, and regular patching and updates are recommended to mitigate the risk associated with this vulnerability.

Immediate Steps to Take

It is advised to apply necessary security patches provided by Bosch to address the CVE-2021-23861 vulnerability. Organizations should restrict access to critical systems and review administrative user rights.

Long-Term Security Practices

Implementing strong access controls, regular security assessments, and monitoring user activities are essential for long-term security posture enhancement.

Patching and Updates

Regularly check for security updates and patches from Bosch to ensure the timely mitigation of vulnerabilities like CVE-2021-23861.