CVE-2021-1519 : Exploit Details and Defense Strategies
Learn about the CVE-2021-1519 affecting Cisco AnyConnect Secure Mobility Client. Discover its impact, technical details, and mitigation steps to secure systems.
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client Software could allow an authenticated, local attacker to overwrite VPN profiles on an affected device.
Understanding CVE-2021-1519
This CVE refers to a security flaw in Cisco AnyConnect Secure Mobility Client Software that could be exploited by a local attacker to tamper with VPN profiles.
What is CVE-2021-1519?
The vulnerability in the IPC channel of Cisco AnyConnect allows a local attacker with valid credentials to modify VPN profile files due to insufficient input validation.
The Impact of CVE-2021-1519
The vulnerability, if successfully exploited, could lead to unauthorized modification of VPN profiles on the affected device, compromising the security and integrity of the system.
Technical Details of CVE-2021-1519
The vulnerability is rated with a CVSSv3.1 base score of 4.7 (Medium severity). It has a high attack complexity and requires low privileges to execute.
Vulnerability Description
Insufficient validation of user-supplied input in the IPC channel of Cisco AnyConnect allows an attacker to send crafted messages and overwrite VPN profiles.
Affected Systems and Versions
The vulnerability affects Cisco AnyConnect Secure Mobility Client with the specified versions.
Exploitation Mechanism
An attacker needs valid credentials on the affected system to exploit this vulnerability by sending a crafted IPC message.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-1519, immediate steps should be taken by users and administrators.
Immediate Steps to Take
Ensure all systems are up to date, limit access privileges, and monitor for any unusual activities that could indicate exploitation.
Long-Term Security Practices
Regularly review security configurations and practices, conduct security training, and implement strong access control measures.
Patching and Updates
Apply patches and updates provided by Cisco to address the vulnerability and prevent potential exploitation.