CVE-2021-27447 in AmegaView
Summary
by MITRE • 12/21/2021
Mesa Labs AmegaView version 3.0 is vulnerable to a command injection, which may allow an attacker to remotely execute arbitrary code.
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Analysis
by VulDB Data Team • 12/25/2021
The vulnerability identified as CVE-2021-27447 affects Mesa Labs AmegaView version 3.0 and represents a critical command injection flaw that enables remote code execution. This vulnerability resides within the software's handling of user-supplied input that is subsequently executed as system commands without proper sanitization or validation. The affected system processes commands through a vulnerable interface that fails to adequately filter or escape special characters, creating an avenue for malicious actors to inject arbitrary shell commands. The implications of this flaw extend beyond simple data compromise as it provides attackers with the capability to execute arbitrary code on the target system with the privileges of the affected application. This vulnerability is particularly concerning because it operates at the command level, allowing attackers to potentially escalate privileges, access sensitive system resources, or deploy additional malicious payloads. The flaw demonstrates a classic lack of input validation and proper command construction practices that are fundamental to secure software development.
The technical exploitation of this vulnerability occurs when an attacker submits malicious input through the application's interface that gets processed and executed as part of a system command. This typically involves injecting shell metacharacters such as semicolons, pipes, or other command delimiters that cause the system to interpret additional commands beyond the intended operation. The vulnerability falls under the CWE-77 category of Command Injection, which is categorized as a high-risk flaw in the Common Weakness Enumeration taxonomy. The attack vector is remote, meaning that an unauthenticated attacker can potentially exploit this vulnerability from outside the network perimeter without requiring any prior access credentials. This characteristic significantly increases the attack surface and makes the vulnerability particularly dangerous in environments where the application is exposed to the internet or untrusted networks.
From an operational impact perspective, this vulnerability creates a severe risk to system integrity and data confidentiality. Successful exploitation allows attackers to gain full control over the affected system, enabling them to execute commands with the privileges of the application process, which may include administrative rights. The potential consequences include unauthorized data access, data exfiltration, system compromise, and the ability to establish persistent backdoors. Organizations running this vulnerable software face significant exposure to advanced persistent threats and automated exploitation attempts. The vulnerability's remote nature means that attackers can target systems without physical access or local network presence, making traditional network segmentation measures less effective. Security operations teams must consider this vulnerability as a high-priority threat that requires immediate attention and remediation.
Mitigation strategies for CVE-2021-27447 must address both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities. The primary solution involves applying the vendor-provided security patches or updates that address the command injection flaw through proper input validation and sanitization. Organizations should also implement network-level controls such as firewalls and access control lists to restrict access to the vulnerable application where possible. Input validation should be strengthened to ensure that all user-supplied data is properly escaped or encoded before being processed as system commands. This vulnerability aligns with ATT&CK technique T1059.001 for Command and Scripting Interpreter, indicating that attackers may leverage this flaw to execute malicious commands. Additional defensive measures include implementing application whitelisting, monitoring for unusual command execution patterns, and conducting regular security assessments of network services. Organizations should also consider implementing network segmentation and zero-trust security models to limit the potential impact of such vulnerabilities. The remediation process should include comprehensive testing to ensure that the patch does not introduce regressions while also verifying that the vulnerability has been effectively addressed through proper validation procedures.