CVE-2022-20918 : Security Advisory and Response
Learn about the impact of CVE-2022-20918, a high-severity vulnerability in Cisco FirePOWER Software allowing unauthorized SNMP access. Find details and mitigation steps here.
A vulnerability in the Simple Network Management Protocol (SNMP) access controls for Cisco FirePOWER Software has been identified, allowing an unauthenticated remote attacker to perform an SNMP GET request using default credentials.
Understanding CVE-2022-20918
This CVE pertains to a security vulnerability found in Cisco FirePOWER Software for Adaptive Security Appliance (ASA) FirePOWER module, Cisco Firepower Management Center (FMC) Software, and Cisco Next-Generation Intrusion Prevention System (NGIPS) Software.
What is CVE-2022-20918?
The vulnerability presents a flaw in SNMP access controls, enabling an attacker to execute an SNMP GET request with default credentials. The issue stems from the existence of default credentials for SNMPv1 and SNMPv2.
The Impact of CVE-2022-20918
If successfully exploited, the attacker could retrieve sensitive information from the affected device. Notably, this attack requires SNMP to be configured, and the attacker can only perform SNMP GET requests as write access is restricted.
Technical Details of CVE-2022-20918
Vulnerability Description
The vulnerability allows unauthenticated actors to leverage default credentials for SNMPv1 and SNMPv2 to carry out malicious SNMP GET requests.
Affected Systems and Versions
The affected products include Cisco Firepower Management Center versions 7.0.0 to 7.0.4, and Cisco FirePOWER Services Software for ASA (version N/A).
Exploitation Mechanism
Attackers can exploit this vulnerability by sending SNMPv1 or SNMPv2 GET requests to the targeted device using default credentials, potentially accessing sensitive data.
Mitigation and Prevention
Immediate Steps to Take
Cisco has released patches to address this vulnerability. It is crucial to apply these patches promptly to mitigate the risk of exploitation.
Long-Term Security Practices
To enhance security posture, organizations should regularly review and update SNMP configurations and credentials, employ network segmentation, and monitor for unusual SNMP activity.
Patching and Updates
Refer to the Cisco Security Advisory for CVE-2022-20918 to access detailed information and apply the necessary patches to secure affected systems.