CVE-2018-19082 in Opticam i5
Summary
by MITRE
An issue was discovered on Foscam Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.21.1.128. The ONVIF devicemgmt SetDNS method allows remote attackers to conduct stack-based buffer overflow attacks via the IPv4Address field.
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Analysis
by VulDB Data Team • 04/10/2020
The vulnerability identified as CVE-2018-19082 affects Foscam Opticam i5 security cameras running specific firmware versions, representing a critical stack-based buffer overflow condition within the ONVIF device management interface. This flaw exists in the SetDNS method implementation, which is part of the ONVIF protocol standard used for configuring network devices. The vulnerability specifically targets the IPv4Address field parameter, where attackers can exploit improper input validation to overwrite adjacent memory locations on the device's stack. Such buffer overflow conditions are classified under CWE-121 as stack-based buffer overflow, where insufficient bounds checking allows malicious input to overwrite stack memory regions. The affected Foscam devices operate with System Firmware 1.5.2.11 and Application Firmware 2.21.1.128, making them susceptible to remote exploitation without requiring authentication.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it provides attackers with potential code execution capabilities on the affected devices. Remote attackers can craft malicious ONVIF requests containing oversized IPv4Address values that exceed the allocated buffer space, leading to stack corruption and possible arbitrary code execution. This vulnerability aligns with ATT&CK technique T1203 (Exploitation for Client Execution) and T1068 (Exploitation for Privilege Escalation), as it allows attackers to gain unauthorized access to network cameras and potentially escalate privileges within the device's operating environment. The exploitation requires only network connectivity to the device's ONVIF port, typically TCP 80, making it particularly dangerous for unsecured network environments where these cameras are deployed. The vulnerability represents a significant security risk for surveillance infrastructure, as compromised cameras can provide attackers with persistent access points for network reconnaissance and further attacks.
Mitigation strategies for CVE-2018-19082 should prioritize immediate firmware updates from Foscam to address the buffer overflow condition in the ONVIF implementation. Organizations should implement network segmentation to isolate affected devices from critical network segments and restrict access to ONVIF ports through firewall rules and access control lists. Network monitoring should be enhanced to detect unusual ONVIF traffic patterns and potential exploitation attempts, while regular security audits should verify that devices are running patched firmware versions. The vulnerability demonstrates the importance of proper input validation and bounds checking in network services, particularly those implementing industry standards like ONVIF that are widely deployed in security infrastructure. Security teams should also consider implementing intrusion detection systems that can identify malformed ONVIF requests targeting this specific vulnerability, as the attack vector is well-defined and can be detected through signature-based monitoring approaches.