CVE-2024-48629 in DIR-822
Summary
by MITRE • 10/17/2024
D-Link DIR_882_FW130B06 and DIR_878 DIR_878_FW130B08 were discovered to contain a command injection vulnerability via the IPAddress parameter in the SetGuestZoneRouterSettings function. This vulnerability allows attackers to execute arbitrary OS commands via a crafted POST request.
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Analysis
by VulDB Data Team • 10/17/2024
The vulnerability identified as CVE-2024-48629 represents a critical command injection flaw affecting D-Link DIR-882 and DIR-878 wireless routers. This security weakness resides within the SetGuestZoneRouterSettings function of the affected firmware versions, specifically DIR_882_FW130B06 and DIR_878_FW130B08. The vulnerability manifests through improper input validation of the IPAddress parameter, which fails to adequately sanitize user-supplied data before processing. This flaw enables attackers to inject malicious commands that are subsequently executed by the underlying operating system of the router.
The technical implementation of this vulnerability stems from a lack of proper parameter sanitization and input validation within the web interface handling of guest zone network settings. When a crafted POST request is submitted with malicious content in the IPAddress field, the router's firmware processes this input without sufficient security controls to distinguish between legitimate configuration data and potentially harmful commands. This weakness directly maps to CWE-77, which describes improper neutralization of special elements used in OS commands, and falls under the broader category of command injection vulnerabilities that have been extensively documented in the cybersecurity community.
From an operational perspective, this vulnerability presents significant risk to network security as it allows remote attackers to execute arbitrary commands on the affected devices with the privileges of the router's system. Successful exploitation could enable attackers to gain full administrative control over the router, potentially leading to complete network compromise, data exfiltration, or the establishment of persistent backdoors. The vulnerability is particularly concerning because it does not require authentication for exploitation, making it accessible to anyone who can send crafted requests to the router's web interface. This characteristic aligns with ATT&CK technique T1059.001, which covers command and script interpreter execution, and represents a critical attack surface that could be leveraged for lateral movement within corporate networks.
The impact extends beyond immediate device compromise as affected routers could serve as entry points for broader network infiltration. Attackers could potentially use the compromised devices to conduct man-in-the-middle attacks, redirect traffic, or establish command and control channels. Network administrators should consider this vulnerability as part of a broader threat landscape that includes similar issues affecting network infrastructure devices. The lack of authentication requirements for exploitation makes this vulnerability particularly dangerous in environments where routers are accessible from untrusted networks. Mitigation strategies should include immediate firmware updates from D-Link, network segmentation to isolate affected devices, and implementation of network monitoring to detect unusual command execution patterns. Additionally, organizations should review their network access controls and consider disabling unnecessary web management interfaces to reduce the attack surface. This vulnerability highlights the importance of proper input validation and the need for robust security testing of network device firmware, particularly in the context of IoT and network infrastructure devices that are often overlooked in security assessments.