CVE-2020-3232 : Vulnerability Insights and Analysis
Learn about CVE-2020-3232, a SNMP vulnerability in Cisco ASR 920 Series Aggregation Services Router model ASR920-12SZ-IM that could lead to a denial of service (DoS) attack. Find mitigation steps and preventive measures here.
A vulnerability in the Simple Network Management Protocol (SNMP) implementation in Cisco ASR 920 Series Aggregation Services Router model ASR920-12SZ-IM could allow an authenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect handling of data that is returned for Cisco Discovery Protocol queries to SNMP. An exploit could lead to a denial of service (DoS) condition.
Understanding CVE-2020-3232
This CVE involves a vulnerability in the SNMP implementation of Cisco ASR 920 Series Aggregation Services Router model ASR920-12SZ-IM, potentially leading to a DoS attack.
What is CVE-2020-3232?
The vulnerability in the SNMP implementation of Cisco ASR 920 Series Aggregation Services Router model ASR920-12SZ-IM allows a remote attacker to trigger a device reload, causing a DoS condition.
The Impact of CVE-2020-3232
The vulnerability could be exploited by an authenticated attacker to cause the affected device to reload, resulting in a denial of service condition.
Technical Details of CVE-2020-3232
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability arises from incorrect handling of data returned for Cisco Discovery Protocol queries to SNMP, enabling an attacker to exploit the device.
Affected Systems and Versions
- Product: Cisco ASR 920 Series Aggregation Services Router
- Vendor: Cisco
- Version: n/a
Exploitation Mechanism
- An attacker can exploit the vulnerability by sending a request for Cisco Discovery Protocol information using SNMP.
Mitigation and Prevention
Protecting systems from CVE-2020-3232 requires immediate action and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch all network devices and software.
- Conduct security training for staff to recognize and respond to potential threats.
- Implement strong access controls and authentication mechanisms.
Patching and Updates
- Cisco may release patches or updates to address the vulnerability; ensure timely implementation to mitigate the risk.