CVE-2020-13159 in Artica
Summary
by MITRE
Artica Proxy before 4.30.000000 Community Edition allows OS command injection via the Netbios name, Server domain name, dhclient_mac, Hostname, or Alias field. NOTE: this may overlap CVE-2020-10818.
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Analysis
by VulDB Data Team • 06/23/2020
Artica Proxy version 4.30.000000 and earlier Community Edition contains a critical operating system command injection vulnerability that affects multiple input fields within the web interface. This vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly escape or filter user-supplied data before it is processed by the underlying operating system. The affected fields include Netbios name, Server domain name, dhclient_mac, Hostname, and Alias parameters, all of which are susceptible to malicious command injection attacks when exploited by unauthorized users.
The technical flaw manifests as a failure to implement proper input sanitization controls, allowing attackers to inject operating system commands that execute with the privileges of the web application process. This represents a classic command injection vulnerability classified under CWE-77, which occurs when a web application passes untrusted data to an operating system command without proper validation or escaping. The vulnerability enables an attacker to execute arbitrary commands on the host system, potentially leading to complete system compromise, data exfiltration, or further lateral movement within the network infrastructure.
The operational impact of this vulnerability is severe as it provides attackers with a direct path to execute arbitrary code on the target system. An attacker could leverage this vulnerability to gain unauthorized access to sensitive network resources, install backdoors, modify system configurations, or extract confidential information from the proxy server. The vulnerability's exploitation is particularly concerning because it affects core network infrastructure components that are often critical to enterprise security operations, potentially allowing attackers to disrupt network services or establish persistent access points within the organization's network perimeter.
The attack surface is expanded by the fact that multiple input fields are affected, increasing the probability of successful exploitation. This vulnerability aligns with ATT&CK technique T1059.001 for Command and Scripting Interpreter, specifically focusing on the execution of operating system commands through web interfaces. Organizations should implement immediate mitigations including upgrading to Artica Proxy version 4.30.000000 or later, implementing web application firewalls to monitor for suspicious command injection patterns, and conducting thorough network segmentation to limit the potential impact of successful exploitation. Additionally, input validation should be strengthened across all user-facing parameters to prevent similar vulnerabilities from occurring in other components of the network infrastructure.