CVE-2019-20714 : Exploit Details and Defense Strategies

Stored XSS vulnerabilities have been detected in several NETGEAR devices including D3600, D6000, D7800, DM200, R7500v2, R7800, R8900, R9000, RBK20, RBR20, RBS20, RBK50, RBR50, RBS50, RBS40, WN3000RPv2, WN3000RPv3, WN3100RPv2, WNDR4300v2, WNDR4500v3, and WNR2000v5.

Understanding CVE-2019-20714

Certain NETGEAR devices are affected by stored XSS vulnerabilities.

What is CVE-2019-20714?

Stored XSS vulnerabilities have been identified in various NETGEAR devices, potentially allowing attackers to execute malicious scripts in the context of a user's browser.

The Impact of CVE-2019-20714

The vulnerability has a CVSS base score of 4.8, indicating a medium severity issue. The attack complexity is low, but high privileges are required for exploitation. User interaction is also required for successful attacks.

Technical Details of CVE-2019-20714

Stored XSS vulnerability details in NETGEAR devices.

Vulnerability Description

The vulnerability allows for stored cross-site scripting attacks on the affected NETGEAR models listed in the advisory.

Affected Systems and Versions

D3600 (version prior to 1.0.0.75)
D6000 (version prior to 1.0.0.75)
D7800 (version prior to 1.0.1.44)
DM200 (version prior to 1.0.0.58)
R7500v2 (version prior to 1.0.3.40)
R7800 (version prior to 1.0.2.60)
R8900 (version prior to 1.0.4.12)
R9000 (version prior to 1.0.4.12)
RBK20, RBR20, RBS20, RBK50, RBR50, RBS50, RBS40 (version prior to 2.3.0.22)
WN3000RPv2 (version prior to 1.0.0.68)
WN3000RPv3 (version prior to 1.0.2.70)
WN3100RPv2 (version prior to 1.0.0.60)
WNDR4300v2 (version prior to 1.0.0.58)
WNDR4500v3 (version prior to 1.0.0.58)
WNR2000v5 (version prior to 1.0.0.68)

Exploitation Mechanism

The vulnerability can be exploited by an attacker with high privileges who can trick a user into interacting with a specially crafted script, leading to potential script execution in the user's browser.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-20714 vulnerability.

Immediate Steps to Take

Update the firmware of the affected NETGEAR devices to the latest versions.
Regularly monitor for security advisories and updates from NETGEAR.
Educate users about the risks of interacting with untrusted content.

Long-Term Security Practices

Implement network segmentation to limit the impact of potential attacks.
Use strong and unique passwords for all devices and accounts.
Employ security tools like firewalls and intrusion detection systems.

Patching and Updates

Apply patches and updates provided by NETGEAR promptly to address known vulnerabilities and enhance device security.