CVE-2024-50559 in RUGGEDCOM RM1224 LTE(4G) EU
Summary
by MITRE • 11/12/2024
A vulnerability has been identified in RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) (All versions < V8.2), RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) (All versions < V8.2), SCALANCE M804PB (6GK5804-0AP00-2AA2) (All versions < V8.2), SCALANCE M812-1 ADSL-Router (6GK5812-1AA00-2AA2) (All versions < V8.2), SCALANCE M812-1 ADSL-Router (6GK5812-1BA00-2AA2) (All versions < V8.2), SCALANCE M816-1 ADSL-Router (6GK5816-1AA00-2AA2) (All versions < V8.2), SCALANCE M816-1 ADSL-Router (6GK5816-1BA00-2AA2) (All versions < V8.2), SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) (All versions < V8.2), SCALANCE M874-2 (6GK5874-2AA00-2AA2) (All versions < V8.2), SCALANCE M874-3 (6GK5874-3AA00-2AA2) (All versions < V8.2), SCALANCE M874-3 3G-Router (CN) (6GK5874-3AA00-2FA2) (All versions < V8.2), SCALANCE M876-3 (6GK5876-3AA02-2BA2) (All versions < V8.2), SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) (All versions < V8.2), SCALANCE M876-4 (6GK5876-4AA10-2BA2) (All versions < V8.2), SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) (All versions < V8.2), SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) (All versions < V8.2), SCALANCE MUM853-1 (A1) (6GK5853-2EA10-2AA1) (All versions < V8.2), SCALANCE MUM853-1 (B1) (6GK5853-2EA10-2BA1) (All versions < V8.2), SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) (All versions < V8.2), SCALANCE MUM856-1 (A1) (6GK5856-2EA10-3AA1) (All versions < V8.2), SCALANCE MUM856-1 (B1) (6GK5856-2EA10-3BA1) (All versions < V8.2), SCALANCE MUM856-1 (CN) (6GK5856-2EA00-3FA1) (All versions < V8.2), SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) (All versions < V8.2), SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) (All versions < V8.2), SCALANCE S615 EEC LAN-Router (6GK5615-0AA01-2AA2) (All versions < V8.2), SCALANCE S615 LAN-Router (6GK5615-0AA00-2AA2) (All versions < V8.2). Affected devices do not properly validate the filenames of the certificate. This could allow an authenticated remote attacker to append arbitrary values which will lead to compromise of integrity of the system.
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Analysis
by VulDB Data Team • 11/12/2024
This vulnerability resides within RUGGEDCOM and SIEMENS SCALANCE industrial network devices, specifically affecting multiple router and switch models across various product lines including RM1224 LTE, SCALANCE M804PB, M812-1, M816-1, M826-2, M874-2, M874-3, M876-3, M876-4, MUM853-1, MUM856-1, and S615 series. The flaw manifests in the certificate filename validation mechanism, where the system fails to properly sanitize input parameters during certificate handling operations. This weakness allows authenticated remote attackers to manipulate certificate filenames by appending arbitrary values, potentially compromising the integrity of the entire system. The vulnerability affects all versions prior to V8.2, indicating a long-standing issue that has not been adequately addressed in the product lifecycle.
The technical implementation of this vulnerability stems from insufficient input validation within the certificate management subsystem of these industrial networking devices. When a certificate file is processed, the system does not properly validate the filename structure, allowing an attacker with valid credentials to inject malicious parameters into the filename. This flaw operates at the application layer and can be exploited through authenticated remote access, requiring minimal privileges but significant system impact. The vulnerability aligns with CWE-20, which describes improper input validation, and represents a classic case of insufficient sanitization of user-supplied data. The attack vector is particularly concerning in industrial environments where network devices serve as critical infrastructure components, as it could enable attackers to compromise device integrity and potentially disrupt operational technology processes.
The operational impact of this vulnerability extends beyond simple certificate manipulation, as it provides a potential pathway for more sophisticated attacks targeting industrial control systems. An attacker could leverage this flaw to install malicious certificates, modify existing certificate chains, or manipulate trust relationships within the network infrastructure. This capability directly impacts the integrity and authenticity of communications between networked devices, potentially enabling man-in-the-middle attacks or certificate forgery operations. The vulnerability's presence in multiple product variants across different geographical markets (EU, NAM, CN, ROK, RoW) suggests a widespread exposure that could affect critical infrastructure deployments in various sectors including energy, manufacturing, and telecommunications. The risk is compounded by the fact that these devices typically operate in environments where physical security is often less stringent than in traditional IT environments, making remote exploitation more likely.
Mitigation strategies for this vulnerability should prioritize immediate firmware updates to version V8.2 or later, which contains the necessary patches to address the certificate filename validation issue. Organizations should also implement network segmentation and access controls to limit the attack surface, ensuring that only authorized personnel can access device management interfaces. Additional protective measures include monitoring for suspicious certificate-related activities, implementing network intrusion detection systems that can identify anomalous filename patterns, and conducting regular security audits of industrial network components. The vulnerability demonstrates the importance of robust input validation in industrial control systems, as highlighted by ATT&CK technique T1552.001 for credentials in files and T1071.004 for application layer protocols. Organizations should also consider implementing certificate pinning mechanisms and regular certificate lifecycle management processes to reduce the risk of exploitation. Given the critical nature of these industrial devices, security teams should establish incident response procedures specifically tailored to address potential certificate-based attacks in operational technology environments.