CVE-2018-21209 : Exploit Details and Defense Strategies
Learn about CVE-2018-21209, a reflected XSS vulnerability affecting multiple NETGEAR devices. Find out the impacted systems, exploitation details, and mitigation steps.
A reflected XSS vulnerability impacts several NETGEAR devices, potentially exposing them to attacks.
Understanding CVE-2018-21209
This CVE identifies a security flaw in various NETGEAR routers and extenders that could be exploited through reflected XSS.
What is CVE-2018-21209?
Reflected XSS affects specific NETGEAR devices, including JNR1010v2, JR6150, JWNR2010v5, PR2000, R6050, R6220, WNDR3700v5, WNR1000v4, WNR2020, and WNR2050.
The Impact of CVE-2018-21209
The vulnerability has a CVSS base score of 4.8 (Medium severity) and requires high privileges for exploitation, potentially leading to low confidentiality and integrity impacts.
Technical Details of CVE-2018-21209
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability allows attackers to execute malicious scripts on the affected devices by tricking users into clicking on specially crafted links.
Affected Systems and Versions
- JNR1010v2 (version below 1.1.0.46)
- JR6150 (version below 1.0.1.10)
- JWNR2010v5 (version below 1.1.0.46)
- PR2000 (version below 1.0.0.20)
- R6050 (version below 1.0.1.10)
- R6220 (version below 1.1.0.60)
- WNDR3700v5 (version below 1.1.0.50)
- WNR1000v4 (version below 1.1.0.46)
- WNR2020 (version below 1.1.0.46)
- WNR2050 (version below 1.1.0.46)
Exploitation Mechanism
The vulnerability is exploited through adjacent network access, requiring no user interaction.
Mitigation and Prevention
Protecting against CVE-2018-21209 is crucial for maintaining the security of NETGEAR devices.
Immediate Steps to Take
- Update affected devices to the latest firmware versions.
- Avoid clicking on suspicious links or visiting untrusted websites.
- Implement network-level protections such as firewalls.
Long-Term Security Practices
- Regularly monitor for security advisories and updates from NETGEAR.
- Educate users about the risks of clicking on unknown links.
Patching and Updates
NETGEAR regularly releases patches and updates to address security vulnerabilities. Stay informed and apply patches promptly.