CVE-2017-10813 in CG-WLR300NM
Summary
by MITRE
CG-WLR300NM Firmware version 1.90 and earlier allows an attacker to execute arbitrary OS commands via unspecified vectors.
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Analysis
by VulDB Data Team • 11/17/2019
The vulnerability identified as CVE-2017-10813 affects the CG-WLR300NM wireless router device running firmware versions 1.90 and earlier. This represents a critical command injection flaw that enables remote attackers to execute arbitrary operating system commands on the affected device. The vulnerability stems from insufficient input validation and sanitization within the router's web interface or API endpoints, allowing malicious actors to inject command sequences that bypass normal security controls. The unspecified vectors suggest that the attack surface may encompass multiple entry points including web forms, API parameters, or direct URL manipulation. This type of vulnerability is particularly dangerous in network infrastructure devices as it provides attackers with direct control over the device's operating system and potentially the entire network segment it manages.
The technical nature of this vulnerability aligns with CWE-77 and CWE-78, which specifically address command injection flaws in software systems. These weaknesses occur when user-supplied data is directly incorporated into operating system commands without proper sanitization or validation. The ATT&CK framework categorizes this as a command execution technique under the T1059.001 sub-technique, where adversaries leverage system interfaces to execute malicious commands. The vulnerability demonstrates a classic path to privilege escalation and persistent access, as the router's operating system typically runs with elevated privileges. Attackers can exploit this flaw to gain full administrative control over the device, potentially leading to man-in-the-middle attacks, DNS hijacking, or using the device as a pivot point for further network exploration and compromise.
The operational impact of CVE-2017-10813 extends beyond simple device compromise, as wireless routers serve as critical network infrastructure components. An attacker who successfully exploits this vulnerability can manipulate network traffic, redirect DNS queries, modify firewall rules, and establish persistent backdoors. The affected CG-WLR300NM devices may be deployed in residential, commercial, or industrial environments, making the potential attack surface significant. Network administrators may remain unaware of the compromise since the malicious activity could be隐蔽 and appear as legitimate device operations. The vulnerability's persistence across multiple firmware versions indicates a fundamental design flaw that was not properly addressed in the development lifecycle, suggesting inadequate security testing and code review processes. This type of vulnerability also increases the risk of lateral movement within networks, as compromised routers often serve as gateways to larger network infrastructures.
Mitigation strategies for CVE-2017-10813 primarily focus on firmware updates and network segmentation. Organizations should immediately upgrade to firmware versions that address this vulnerability, as the manufacturer likely released patches to sanitize input parameters and implement proper command execution controls. Network administrators should also consider implementing network monitoring solutions to detect anomalous command execution patterns or unusual traffic flows that might indicate exploitation attempts. The principle of least privilege should be applied to router management interfaces, limiting access to authorized personnel only and implementing multi-factor authentication. Additional protective measures include disabling unnecessary services, implementing web application firewalls, and conducting regular security assessments of network infrastructure. From a defense-in-depth perspective, organizations should monitor for known exploit kits and threat intelligence feeds that may indicate active exploitation attempts targeting this specific vulnerability. The vulnerability underscores the importance of regular firmware updates and security audits, particularly for network infrastructure devices that are often overlooked in security management programs.