CVE-2018-5694 in Flash Operator Panel
Summary
by MITRE
The callforward module in User Control Panel (UCP) in Nicolas Gudino (aka Asternic) Flash Operator Panel (FOP) 2.31.03 allows remote authenticated users to execute arbitrary commands via the command parameter.
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Analysis
by VulDB Data Team • 12/23/2019
The vulnerability identified as CVE-2018-5694 resides within the callforward module of the User Control Panel component in Nicolas Gudino's Flash Operator Panel version 2.31.03. This represents a critical security flaw that enables remote authenticated attackers to execute arbitrary commands on the affected system. The vulnerability specifically manifests through improper input validation within the command parameter of the callforward functionality, creating a path for malicious exploitation that bypasses normal authentication and authorization mechanisms.
This security flaw constitutes a command injection vulnerability that aligns with CWE-77, which categorizes improper neutralization of special elements used in commands. The vulnerability exists because the application fails to properly sanitize or validate user-supplied input before incorporating it into system commands. Attackers who have gained legitimate authentication credentials can exploit this weakness by crafting malicious payloads that manipulate the command parameter to execute unauthorized system operations. The attack vector requires only remote access with valid user credentials, making it particularly dangerous as it can be exploited from external networks without requiring physical access or additional privileges.
The operational impact of this vulnerability is severe and multifaceted. Successful exploitation allows attackers to execute arbitrary commands with the privileges of the affected application, potentially leading to complete system compromise, data exfiltration, or further lateral movement within the network. The vulnerability affects organizations using the Flash Operator Panel 2.31.03, which is commonly deployed in telephony and communication environments where user control panels manage call routing and forwarding functions. The attack pattern follows typical command injection methodologies as outlined in the MITRE ATT&CK framework under the technique T1059.001 for command and scripting interpreter, making it a significant concern for organizations relying on unified communications platforms.
Organizations should immediately implement mitigations including applying the vendor-provided patches or updates that address the command injection vulnerability in the callforward module. Network segmentation and access controls should be enforced to limit the scope of potential exploitation, while monitoring systems should be configured to detect unusual command execution patterns. The remediation process involves validating all user inputs through proper sanitization techniques, implementing input validation controls, and ensuring that the application operates with minimal required privileges. Security teams should also conduct comprehensive vulnerability assessments of similar components within their telephony and communication infrastructure to identify potential analogous vulnerabilities that may exist in other systems. Regular security audits and penetration testing should be performed to verify the effectiveness of implemented controls and ensure that no other command injection vulnerabilities remain unaddressed in the broader system landscape.