CVE-2017-13992 in LVIS-3ME
Summary
by MITRE
An Insufficient Entropy issue was discovered in LOYTEC LVIS-3ME versions prior to 6.2.0. The application does not utilize sufficiently random number generation for the web interface authentication mechanism, which could allow remote code execution.
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Analysis
by VulDB Data Team • 01/15/2021
The vulnerability identified as CVE-2017-13992 represents a critical security flaw in LOYTEC LVIS-3ME software versions earlier than 6.2.0, specifically targeting the web interface authentication mechanism. This issue falls under the category of insufficient entropy, which fundamentally undermines the cryptographic security measures designed to protect system access. The flaw stems from the application's failure to implement robust random number generation during the authentication process, creating predictable patterns that adversaries can exploit to compromise system integrity.
The technical implementation of this vulnerability demonstrates poor entropy generation practices within the authentication framework, where the system relies on pseudo-random number generators that lack adequate randomness properties. This weakness directly violates established security principles outlined in cwe-330, which specifically addresses insufficient entropy in cryptographic systems. When authentication tokens or session identifiers are generated using insufficiently random data, they become vulnerable to prediction attacks that can be executed remotely without requiring physical access to the device. The vulnerability enables attackers to bypass authentication mechanisms through brute force or mathematical prediction techniques that exploit the predictable nature of the generated values.
The operational impact of this vulnerability extends beyond simple authentication bypass to potentially enable full system compromise through remote code execution capabilities. An attacker who successfully predicts or generates valid authentication tokens can gain unauthorized access to the web interface and subsequently execute arbitrary commands on the target system. This represents a severe escalation from initial access to system control, as the vulnerability does not merely allow unauthorized viewing of system information but provides complete administrative privileges. The remote execution aspect of this flaw means that attackers can operate from any location with network access to the vulnerable device, making the attack surface significantly broader than local exploitation methods.
Security professionals should consider this vulnerability in relation to the mitre att&ck framework, specifically under the initial access and privilege escalation domains where techniques such as credential access and exploitation of remote services are commonly employed. The flaw aligns with attack patterns that target weak cryptographic implementations in networked devices, particularly those used in industrial control systems and monitoring environments. Organizations utilizing LOYTEC LVIS-3ME devices should prioritize immediate remediation through firmware updates to version 6.2.0 or later, as this represents the primary mitigation strategy. Additionally, network segmentation and access controls should be implemented to limit exposure of these devices to untrusted networks, while continuous monitoring for unauthorized access attempts should be maintained to detect potential exploitation attempts.