CVE-2024-22080 in G5 Digital Fault Recorder
Summary
by MITRE • 03/20/2024
An issue was discovered in Elspec G5 digital fault recorder versions 1.1.4.15 and before. Unauthenticated memory corruption can occur during XML body parsing.
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Analysis
by VulDB Data Team • 04/17/2025
The vulnerability identified as CVE-2024-22080 affects Elspec G5 digital fault recorder devices running firmware versions 1.1.4.15 and earlier. This issue represents a critical security flaw that allows unauthenticated attackers to exploit memory corruption during XML body parsing operations. The affected device operates within industrial control systems environments where reliable and secure operation is paramount for grid stability and safety. The vulnerability exists in the device's XML processing functionality, which is likely used for configuration management, data exchange, or communication protocols within the power grid infrastructure. Given the nature of digital fault recorders in electrical systems, this vulnerability could potentially impact critical infrastructure operations and pose significant risks to power grid reliability.
The technical flaw manifests as a memory corruption vulnerability that occurs when the device processes XML bodies without proper authentication checks. This unauthenticated access vector means that any external party can send maliciously crafted XML data to the device, triggering the memory corruption condition. The vulnerability falls under CWE-121, which describes heap-based buffer overflow conditions, and potentially CWE-122 for stack-based buffer overflow scenarios. The parsing mechanism lacks proper input validation and sanitization, allowing attackers to manipulate the XML structure to overwrite memory locations beyond intended boundaries. This type of vulnerability is particularly dangerous in industrial environments as it can lead to denial of service conditions, data corruption, or potentially more severe consequences depending on the memory locations overwritten.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise the integrity of power grid monitoring and control systems. Digital fault recorders are essential components for detecting and analyzing electrical faults in power transmission systems, making their reliability critical for grid operators. An attacker exploiting this vulnerability could cause the device to crash or behave unpredictably, leading to loss of critical fault data that might be needed for grid maintenance and safety analysis. The unauthenticated nature of the attack means that even network segments that should be protected could be compromised, as no credentials or authentication are required to initiate the exploit. This vulnerability could also serve as a stepping stone for more sophisticated attacks targeting the broader industrial control system infrastructure, aligning with ATT&CK technique T1210 for exploitation of remote services and T1071 for application layer protocol usage.
Mitigation strategies for CVE-2024-22080 should prioritize immediate firmware updates from Elspec to address the memory corruption vulnerability. Organizations operating these devices should implement network segmentation and access controls to limit exposure to untrusted networks, applying principles from the NIST Cybersecurity Framework to protect critical infrastructure. Network monitoring should be enhanced to detect unusual XML traffic patterns that might indicate exploitation attempts, while also implementing proper input validation at network boundaries. The vulnerability requires patching at the device firmware level, and administrators should verify that the updated firmware properly addresses the XML parsing mechanisms. Additionally, organizations should conduct thorough security assessments of their industrial control systems to identify other potential vulnerabilities in similar devices, as this type of memory corruption issue is often indicative of broader software quality and security concerns that may affect other components within the same system architecture.