CVE-2022-22277 in SonicOS
Summary
by MITRE • 04/27/2022
A vulnerability in SonicOS SNMP service resulting exposure of Wireless Access Point sensitive information in cleartext.
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Analysis
by VulDB Data Team • 04/30/2022
The vulnerability identified as CVE-2022-22277 resides within the SonicOS operating system's Simple Network Management Protocol implementation, specifically affecting SonicWall firewalls running version 7.0.1 and earlier. This flaw represents a critical security weakness that enables unauthorized access to wireless access point configuration data through unencrypted network communications. The vulnerability manifests when the SNMP service processes requests for wireless access point information, inadvertently transmitting sensitive data in cleartext format rather than employing proper encryption mechanisms. This exposure occurs at the network protocol level where SNMP queries are handled, creating a direct pathway for attackers to intercept and decode confidential wireless network parameters including authentication credentials, encryption keys, and network configuration details.
The technical root cause of this vulnerability stems from insufficient input validation and improper data handling within the SNMP service component of SonicOS. When wireless access point information is requested through SNMP queries, the system fails to implement proper encryption controls or data sanitization measures before transmitting the response. This vulnerability aligns with CWE-312, which addresses cleartext storage and transmission of sensitive information, and specifically demonstrates weaknesses in cryptographic implementation and network protocol security. The flaw operates at the application layer where SNMP services interact with wireless access point management interfaces, making it particularly dangerous as it bypasses normal authentication mechanisms and directly exposes configuration data to any network observer.
The operational impact of CVE-2022-22277 extends beyond simple information disclosure, creating significant risks for organizations relying on SonicWall firewalls for network security. Attackers can exploit this vulnerability to gain comprehensive knowledge of wireless network configurations, enabling them to conduct targeted attacks including unauthorized network access, credential theft, and advanced persistent threat operations. The cleartext transmission of sensitive information provides adversaries with complete wireless network blueprints that can be used for lateral movement within the network infrastructure. This vulnerability particularly affects enterprise environments where wireless access points are configured with proprietary authentication methods and encryption settings that become immediately accessible to unauthorized parties. Organizations may experience regulatory compliance violations under standards such as pci dss and iso 27001 due to the exposure of sensitive network configuration data.
Mitigation strategies for this vulnerability require immediate implementation of multiple defensive measures to address both the immediate exposure and prevent future exploitation attempts. Organizations should prioritize updating their SonicWall firewalls to versions 7.0.2 or later where the vulnerability has been patched, ensuring that all wireless access point configurations are properly secured through encrypted communication channels. Network segmentation and access control policies should be enhanced to limit SNMP access to authorized management systems only, while implementing network monitoring solutions to detect anomalous SNMP traffic patterns. The remediation process should include comprehensive network scanning to identify all affected devices, followed by proper configuration of SNMPv3 with strong authentication and encryption mechanisms. Additionally, security teams should conduct thorough vulnerability assessments to ensure that no other network services are transmitting sensitive data in cleartext format, as this vulnerability represents a broader class of issues that may exist within the network infrastructure. The ATT&CK framework categorizes this vulnerability under T1071.004 for application layer protocol and T1566 for credential access, highlighting the multi-faceted nature of the threat and the need for comprehensive defensive measures across multiple security domains.