CVE-2021-1490 : What You Need to Know
Discover the impact of CVE-2021-1490 affecting Cisco Web Security Appliance (WSA). Learn about the XSS vulnerability, its technical details, and mitigation strategies.
A vulnerability in the web-based management interface of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack.
Understanding CVE-2021-1490
This vulnerability affects Cisco Web Security Appliance (WSA) with improper validation of user input, allowing attackers to execute arbitrary script code.
What is CVE-2021-1490?
The vulnerability in Cisco WSA's web-based management interface permits remote attackers to conduct XSS attacks on users, potentially compromising sensitive information.
The Impact of CVE-2021-1490
If exploited, attackers can execute malicious scripts in the context of the affected interface, accessing sensitive data or executing code.
Technical Details of CVE-2021-1490
The vulnerability affects Cisco Web Security Appliance (WSA) with a CVSS base score of 4.7.
Vulnerability Description
The flaw results from inadequate validation of user-supplied input in the web-based management interface, enabling attackers to upload files containing malicious payloads.
Affected Systems and Versions
The affected product is Cisco Web Security Appliance (WSA) with the vulnerability present in all versions.
Exploitation Mechanism
Attackers can exploit this vulnerability by tricking a user into uploading a crafted file with a malicious payload onto the device. User interaction is required for a successful exploit.
Mitigation and Prevention
To safeguard against CVE-2021-1490, immediate actions and long-term security practices are recommended.
Immediate Steps to Take
Organizations should ensure awareness of the vulnerability, monitor for any unusual activities, and apply security patches promptly.
Long-Term Security Practices
Implement strict input validation procedures, conduct regular security audits, and educate users on safe browsing practices.
Patching and Updates
Stay updated with security advisories from Cisco, apply patches provided by the vendor, and consider security best practices to enhance overall defense mechanisms.