CVE-2022-47893 in Netman-204
Summary
by MITRE • 10/25/2023
There is a remote code execution vulnerability that affects all versions of NetMan 204. A remote attacker could upload a firmware file containing a webshell, that could allow him to execute arbitrary code as root.
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Analysis
by VulDB Data Team • 10/25/2023
The vulnerability identified as CVE-2022-47893 represents a critical remote code execution flaw within NetMan 204 software versions, posing significant security risks to affected systems. This vulnerability stems from inadequate input validation and insufficient access controls during firmware upload processes, creating an exploitable pathway for malicious actors to gain unauthorized system access. The flaw specifically manifests when the system fails to properly validate uploaded firmware files, allowing attackers to bypass security measures and inject malicious code into the target environment.
This vulnerability directly maps to CWE-434, which describes insecure upload of executable code, and aligns with ATT&CK technique T1059.007 for command and script injection. The technical implementation of this flaw involves the system's failure to enforce proper file type validation and content inspection during firmware deployment operations. Attackers can leverage this weakness by crafting malicious firmware files containing webshell components that, when uploaded and processed by the vulnerable NetMan 204 system, execute with root privileges. The exploitation process typically involves uploading a specially crafted firmware package that includes a webshell payload, which then becomes executable within the system's operational environment.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it enables complete system compromise and persistent access for threat actors. Once successfully exploited, attackers can execute arbitrary commands with the highest system privileges, potentially leading to data exfiltration, system disruption, or further lateral movement within network environments. The root-level execution capability means that compromised systems can be used as launch points for additional attacks, making this vulnerability particularly dangerous in enterprise environments where NetMan 204 may be deployed across critical infrastructure components.
Organizations affected by this vulnerability should implement immediate mitigations including firmware update procedures, network segmentation, and enhanced monitoring of firmware upload activities. Security controls should focus on implementing strict file validation mechanisms, access restriction policies, and continuous monitoring for unauthorized firmware modifications. The remediation process requires updating to patched versions of NetMan 204 that address the firmware validation weaknesses and implement proper input sanitization measures. Additionally, organizations should conduct comprehensive security assessments to identify any potential compromise and establish incident response procedures to handle potential exploitation attempts.