CVE-2021-23848 : Security Advisory and Response
Learn about CVE-2021-23848, a HIGH severity reflected XSS vulnerability in Bosch IP cameras. Understand the impact, affected systems, exploitation, and mitigation steps.
A security vulnerability, categorized as CVE-2021-23848, has been identified in Bosch IP cameras due to an error in the URL handler. This vulnerability may allow an attacker to perform a reflected cross-site scripting (XSS) attack through the web-based interface.
Understanding CVE-2021-23848
This section delves into the details of the CVE-2021-23848 vulnerability affecting Bosch IP cameras.
What is CVE-2021-23848?
The CVE-2021-23848 vulnerability stems from an error in the URL handler of Bosch IP cameras, leading to a reflected cross-site scripting (XSS) issue. Attackers with knowledge of the camera's address can exploit this flaw by sending crafted links to users, executing malicious JavaScript code in their context.
The Impact of CVE-2021-23848
The impact of this vulnerability is rated as HIGH severity according to the CVSS v3.1 metrics. The attack complexity is considered HIGH, with no need for special privileges. It can result in compromised confidentiality, integrity, and availability of the affected systems.
Technical Details of CVE-2021-23848
This section covers the technical aspects of the CVE-2021-23848 vulnerability.
Vulnerability Description
The vulnerability involves a reflected cross-site scripting (XSS) issue in the web-based interface of Bosch IP cameras due to an error in the URL handler.
Affected Systems and Versions
The vulnerability affects all versions of CPP Firmware running on platforms CPP4, CPP6, CPP7, CPP7.3, and CPP13.
Exploitation Mechanism
To exploit this vulnerability, an attacker needs knowledge of the camera address to send a crafted link to a user, triggering the execution of malicious JavaScript code.
Mitigation and Prevention
This section outlines the steps to mitigate and prevent exploitation of CVE-2021-23848.
Immediate Steps to Take
Users and administrators are advised to update the firmware of Bosch IP cameras to the latest version provided by the vendor. Additionally, exercise caution while clicking on links received from untrusted sources.
Long-Term Security Practices
Implement security best practices such as network segmentation, regular security assessments, and user awareness training to enhance overall security posture.
Patching and Updates
Stay informed about security advisories from Bosch and apply patches promptly to address known vulnerabilities and prevent potential exploitation.