CVE-2021-36755 : What You Need to Know
Discover the details of CVE-2021-36755 where Nightscout Web Monitor is susceptible to cross-site scripting (XSS) attacks via a manipulated X-Forwarded-For header. Learn about impacts, technical aspects, and mitigation.
Nightscout Web Monitor (aka cgm-remote-monitor) version 14.2.2 is vulnerable to a cross-site scripting (XSS) attack through a specifically crafted X-Forwarded-For header.
Understanding CVE-2021-36755
This section will detail what CVE-2021-36755 is, its impacts, technical details, and how to mitigate the vulnerability.
What is CVE-2021-36755?
CVE-2021-36755 involves an XSS vulnerability in Nightscout Web Monitor version 14.2.2, which can be exploited via a manipulated X-Forwarded-For header.
The Impact of CVE-2021-36755
The vulnerability in Nightscout Web Monitor could allow an attacker to execute malicious scripts in a victim's browser, potentially leading to unauthorized actions or data theft.
Technical Details of CVE-2021-36755
Here we discuss the specifics of the vulnerability.
Vulnerability Description
The flaw in Nightscout Web Monitor version 14.2.2 enables attackers to inject and execute arbitrary scripts by manipulating the X-Forwarded-For header, posing a risk of XSS attacks.
Affected Systems and Versions
Nightscout Web Monitor version 14.2.2 is confirmed to be impacted by CVE-2021-36755. Users of this version are at risk of exploitation.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending a malicious X-Forwarded-For header to the targeted Nightscout Web Monitor instance, allowing them to execute harmful scripts.
Mitigation and Prevention
It is crucial to understand how to mitigate and prevent the impact of CVE-2021-36755.
Immediate Steps to Take
Users should update Nightscout Web Monitor to a patched version that addresses the XSS vulnerability. Additionally, input validation and output encoding can help mitigate XSS risks.
Long-Term Security Practices
Regularly updating software, employing secure coding practices, and conducting security assessments can enhance the overall security posture against similar vulnerabilities.
Patching and Updates
Nightscout Web Monitor users are advised to apply security patches released by the project to remediate CVE-2021-36755 and protect their systems from potential exploitation.