CVE-2021-1612 : Vulnerability Insights and Analysis
Discover how the CVE-2021-1612 vulnerability in Cisco IOS XE SD-WAN Software allows local attackers to overwrite files with insights on impact, technical details, and mitigation strategies.
A vulnerability in the Cisco IOS XE SD-WAN Software CLI could allow an authenticated, local attacker to overwrite arbitrary files on the local system. This vulnerability is due to improper access controls on files within the local file system. An attacker could exploit this vulnerability by placing a symbolic link in a specific location on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on an affected device.
Understanding CVE-2021-1612
This section provides insights into the impact, technical details, and mitigation strategies related to the CVE-2021-1612 vulnerability.
What is CVE-2021-1612?
The CVE-2021-1612 vulnerability pertains to the Cisco IOS XE SD-WAN Software, allowing a local attacker to overwrite arbitrary files on the system by exploiting improper access controls.
The Impact of CVE-2021-1612
The impact of this vulnerability is rated as medium severity (CVSS base score: 5.5), with high integrity impact and low privileges required for exploitation.
Technical Details of CVE-2021-1612
Get more insights about the vulnerability through the following technical details.
Vulnerability Description
The vulnerability allows an authenticated, local attacker to overwrite arbitrary files on the affected system by placing a symbolic link in a specific location.
Affected Systems and Versions
The Cisco IOS XE SD-WAN Software version is affected by this vulnerability, with potential exploitation to overwrite files.
Exploitation Mechanism
Exploiting this issue involves manipulation of improper access controls to place a symbolic link and overwrite files on the local system.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2021-1612 and prevent potential exploitation.
Immediate Steps to Take
Immediately patch the affected system, restrict unauthorized access, and monitor for any file overwrite attempts.
Long-Term Security Practices
Implement strict file system access controls, regularly update software, and conduct security training for employees.
Patching and Updates
Apply the latest security patches provided by Cisco to address the vulnerability effectively.