CVE-2022-21143 in Mimosa
Summary
by MITRE • 02/18/2022
MMP: All versions prior to v1.0.3, PTP C-series: Device versions prior to v2.8.6.1, and PTMP C-series and A5x: Device versions prior to v2.5.4.1 does not properly sanitize user input on several locations, which may allow an attacker to inject arbitrary commands.
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Analysis
by VulDB Data Team • 05/25/2026
This vulnerability represents a critical command injection flaw affecting multiple network device families including MMP series, PTP C-series, and PTMP C-series devices. The vulnerability stems from inadequate input sanitization mechanisms that fail to properly validate or escape user-supplied data before processing. When devices receive malformed input through various communication channels, the insufficient sanitization allows attackers to inject malicious commands that execute with the privileges of the affected device processes. This weakness creates a pathway for remote code execution and arbitrary command injection attacks across multiple device models and firmware versions. The vulnerability affects devices running firmware versions prior to v1.0.3 for MMP series, v2.8.6.1 for PTP C-series, and v2.5.4.1 for PTMP C-series and A5x devices, indicating a widespread issue within these product lines.
The technical exploitation of this vulnerability aligns with common command injection attack patterns and maps directly to CWE-77 which defines improper neutralization of special elements used in a command. Attackers can leverage this flaw by crafting malicious input that bypasses existing security controls and executes unintended system commands. The impact extends beyond simple command execution to potentially allow full device compromise, data exfiltration, and lateral movement within network environments. Devices that process user input through web interfaces, API endpoints, or network protocols become vulnerable to this attack vector, particularly when input validation occurs at inappropriate layers of the application stack. The vulnerability demonstrates poor defense-in-depth principles where input validation should occur at multiple points to prevent malicious data from reaching critical processing functions.
Operationally, this vulnerability presents significant risk to network infrastructure security as it allows remote attackers to gain unauthorized access to network devices without requiring authentication. The attack surface includes web management interfaces, command-line interfaces, and potentially API endpoints that accept user input. Successful exploitation could enable attackers to modify device configurations, install backdoors, or redirect network traffic. Network administrators face the challenge of identifying vulnerable devices across their infrastructure and applying patches across multiple device families with different update schedules. The vulnerability's impact is compounded by the fact that it affects multiple generations of network equipment, requiring comprehensive assessment and remediation efforts. Organizations may experience service disruption during patching operations and face potential regulatory compliance issues due to unpatched security vulnerabilities.
Mitigation strategies should include immediate deployment of available firmware updates to address the input sanitization flaws in affected device versions. Network segmentation and access control measures can reduce the attack surface by limiting direct access to vulnerable devices from untrusted networks. Implementing network monitoring and intrusion detection systems can help identify suspicious command injection attempts and anomalous network behavior. Regular vulnerability assessments should be conducted to identify other potential input validation weaknesses in network infrastructure. Device hardening practices including disabling unnecessary services, implementing strong authentication mechanisms, and maintaining detailed audit logs are essential defensive measures. Security teams should also consider implementing web application firewalls and input validation controls at network boundaries to provide additional protection against command injection attacks. The vulnerability highlights the importance of maintaining current firmware versions and implementing robust software development practices that prioritize input validation and sanitization throughout the application lifecycle.