CVE-2021-1486 Explained : Impact and Mitigation
Discover the impact and mitigation strategies for CVE-2021-1486, a vulnerability in Cisco SD-WAN vManage Software allowing remote user account enumeration via improper HTTP header handling.
A vulnerability in Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to enumerate user accounts due to the improper handling of HTTP headers.
Understanding CVE-2021-1486
This CVE refers to a security vulnerability in Cisco SD-WAN vManage Software that enables unauthorized remote attackers to enumerate user accounts on affected systems.
What is CVE-2021-1486?
CVE-2021-1486 is a vulnerability in Cisco SD-WAN vManage Software that arises from the incorrect processing of HTTP headers, allowing attackers to compare HTTP responses and identify valid user accounts.
The Impact of CVE-2021-1486
The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 5.3. If exploited successfully, attackers can determine valid user accounts on affected systems.
Technical Details of CVE-2021-1486
This section provides specific technical details regarding the vulnerability in Cisco SD-WAN vManage Software.
Vulnerability Description
The vulnerability allows unauthenticated attackers to enumerate user accounts by manipulating HTTP headers on the target system.
Affected Systems and Versions
The affected product is Cisco SD-WAN vManage, and all versions are susceptible to this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending authenticated requests to the affected system, enabling them to identify valid user accounts.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-1486, consider the following steps.
Immediate Steps to Take
- Monitor vendor updates and security notices regularly.
- Implement network security best practices to reduce exposure.
- Restrict network access to privileged accounts.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing.
- Educate users on the importance of strong passwords and security awareness.
Patching and Updates
Apply the latest security patches and updates provided by Cisco to address the vulnerability in a timely manner.