CVE-2021-41946 Explained : Impact and Mitigation
CVE-2021-41946 describes a stored cross-site scripting (XSS) flaw in FiberHome VDSL2 Modem HG150-Ub_V3.0, allowing attackers to execute malicious scripts in the Username field, posing security risks.
In FiberHome VDSL2 Modem HG150-Ub_V3.0, a stored cross-site scripting (XSS) vulnerability in Parental Control --> Access Time Restriction --> Username field allows an attacker to execute malicious scripts and prevents users from deleting rules.
Understanding CVE-2021-41946
What is CVE-2021-41946?
This CVE describes a stored cross-site scripting vulnerability in FiberHome VDSL2 Modem HG150-Ub_V3.0, affecting the Username field within the Parental Control settings.
The Impact of CVE-2021-41946
The vulnerability allows attackers to inject malicious scripts, potentially leading to unauthorized data access and other security risks.
Technical Details of CVE-2021-41946
Vulnerability Description
A stored XSS vulnerability exists in the Username field of the Parental Control settings, preventing the deletion of rules.
Affected Systems and Versions
- Product: FiberHome VDSL2 Modem HG150-Ub_V3.0
- Vendor: FiberHome
- Versions: All versions are affected
Exploitation Mechanism
Attackers can exploit this vulnerability by injecting malicious scripts into the Username field, which are executed within the context of the user's browser.
Mitigation and Prevention
Immediate Steps to Take
- Disable Parental Control features until a patch is available.
- Regularly monitor for any unauthorized changes in the system.
Long-Term Security Practices
- Educate users on safe browsing practices and recognizing phishing attempts.
- Implement web application firewalls to filter and block malicious traffic.
Patching and Updates
- Apply security patches provided by FiberHome to address the vulnerability.