CVE-2019-5232 in Viewpoint
Summary
by MITRE
There is a use of insufficiently random values vulnerability in Huawei ViewPoint products. An unauthenticated, remote attacker can guess information by a large number of attempts. Successful exploitation may cause information leak.
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Analysis
by VulDB Data Team • 03/05/2024
The vulnerability identified as CVE-2019-5232 represents a critical weakness in Huawei ViewPoint products that stems from the use of insufficiently random values within the system's cryptographic operations. This flaw falls under the broader category of weak randomness generation, which is classified as CWE-330, indicating inadequate entropy sources in cryptographic implementations. The vulnerability specifically affects Huawei ViewPoint systems that utilize pseudo-random number generators with predictable sequences, creating a significant security risk for organizations relying on these telecommunication infrastructure solutions.
The technical implementation of this vulnerability allows an unauthenticated remote attacker to exploit the predictable nature of the random number generation process through extensive brute force attempts. This weakness enables attackers to reverse-engineer or guess sensitive information such as session tokens, encryption keys, or other cryptographic values that depend on proper randomness. The attack vector is particularly concerning because it requires no authentication credentials and can be executed from any network location, making it accessible to a broad range of threat actors including those with limited technical expertise.
From an operational impact perspective, successful exploitation of CVE-2019-5232 could lead to complete system compromise and unauthorized access to sensitive communications. The information leak potential extends beyond simple data exposure to include potential disruption of critical telecommunication services, unauthorized surveillance capabilities, and access to confidential business communications. Organizations using Huawei ViewPoint products may experience significant operational disruption and regulatory compliance issues, particularly in environments governed by standards such as the General Data Protection Regulation or financial services compliance frameworks that mandate strong cryptographic protections.
The mitigation strategies for this vulnerability should include immediate firmware updates from Huawei addressing the random number generation algorithms, implementation of network segmentation to limit attack surface, and enhanced monitoring for unusual access patterns or brute force attempts. Security professionals should also consider implementing additional authentication mechanisms and regularly auditing cryptographic implementations to ensure proper entropy sources are utilized. This vulnerability aligns with ATT&CK technique T1566 which involves social engineering through phishing or other manipulation tactics, as attackers may exploit the predictable nature of the system to gain unauthorized access through information gathering and exploitation phases of the attack lifecycle. Organizations should also review their incident response procedures to ensure rapid detection and remediation of similar vulnerabilities in their telecommunication infrastructure components.