CVE-2022-1703 in SMA100
Summary
by MITRE • 06/08/2022
Improper neutralization of special elements in the SonicWall SSL-VPN SMA100 series management interface allows a remote authenticated attacker to inject OS Commands which potentially leads to remote command execution vulnerability or denial of service (DoS) attack.
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Analysis
by VulDB Data Team • 06/11/2022
The SonicWall SSL-VPN SMA100 series represents a critical remote command execution vulnerability classified as CVE-2022-1703, where improper neutralization of special elements within the management interface creates a pathway for authenticated attackers to inject operating system commands. This vulnerability specifically targets the web-based administration console of the SMA100 series devices, which are widely deployed for secure remote access solutions in enterprise environments. The flaw stems from inadequate input validation and sanitization mechanisms that fail to properly handle special characters and command sequences within the management interface parameters, allowing maliciously crafted inputs to bypass security controls and execute unintended system commands.
The technical implementation of this vulnerability falls under CWE-77 which describes improper neutralization of special elements used in OS commands, a well-documented weakness that enables command injection attacks. Attackers exploiting this vulnerability must first establish authentication credentials to access the management interface, typically through legitimate administrative accounts or compromised credentials. Once authenticated, the attacker can manipulate form fields, URL parameters, or API endpoints within the management console to inject malicious command sequences that the system processes without proper sanitization. The attack vector specifically targets the device's command processing mechanisms, where user-supplied inputs are directly incorporated into system calls without adequate filtering or escaping of special shell metacharacters such as semicolons, pipes, or backticks.
The operational impact of this vulnerability extends beyond simple command execution to potentially enable complete system compromise and denial of service conditions. Successful exploitation could allow attackers to gain root privileges, modify system configurations, extract sensitive data, install backdoors, or disrupt service availability through resource exhaustion attacks. Organizations relying on SMA100 series devices for remote access may face significant security implications including unauthorized access to corporate networks, data exfiltration, and potential lateral movement within the network infrastructure. The vulnerability affects the management plane of the devices, making it particularly dangerous as it can compromise the integrity of the entire system configuration and potentially provide attackers with persistent access to the affected infrastructure.
Organizations should implement immediate mitigations including applying the latest firmware updates from SonicWall that address the command injection vulnerability, implementing network segmentation to limit access to management interfaces, and establishing robust authentication controls including multi-factor authentication. The vulnerability aligns with ATT&CK technique T1059 which covers command and scripting interpreter, specifically targeting the execution of system commands through compromised administrative interfaces. Security teams should also deploy network monitoring solutions to detect anomalous command execution patterns and implement strict access controls limiting management interface access to trusted IP ranges and authorized personnel only. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other network infrastructure components that may present analogous attack surfaces requiring similar remediation approaches.