CVE-2022-34394 in OS10
Summary
by MITRE • 09/29/2022
Dell OS10, version 10.5.3.4, contains an Improper Certificate Validation vulnerability in Support Assist. A remote unauthenticated attacker could potentially exploit this vulnerability, leading to unauthorized access to limited switch configuration data. The vulnerability could be leveraged by attackers to conduct man-in-the-middle attacks to gain access to the Support Assist information.
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Analysis
by VulDB Data Team • 09/29/2022
The CVE-2022-34394 vulnerability resides within Dell OS10 version 10.5.3.4, specifically affecting the Support Assist component that facilitates remote system diagnostics and support operations. This issue represents a critical weakness in the certificate validation mechanism that governs secure communications between network switches and support services. The vulnerability stems from inadequate verification of digital certificates used during the authentication process, creating an exploitable condition that allows malicious actors to bypass normal security controls. The flaw particularly impacts environments where Dell switches are configured to use Support Assist for remote troubleshooting and system monitoring, potentially exposing sensitive network infrastructure to unauthorized access.
The technical implementation of this vulnerability manifests as a failure in the certificate validation routine that should verify the authenticity and integrity of digital certificates used in secure communications. When Support Assist attempts to establish encrypted connections with remote support servers, the system fails to properly validate the certificate chain, allowing attackers to present fraudulent certificates that appear legitimate to the switch. This improper validation creates a pathway for man-in-the-middle attacks where adversaries can intercept and potentially modify communications between the switch and support services. The vulnerability specifically affects the cryptographic validation process that should ensure only trusted entities can access switch configuration data through the Support Assist interface.
From an operational standpoint, this vulnerability presents significant risk to network security posture as it allows remote unauthenticated attackers to access limited switch configuration data without requiring valid credentials or authentication. The impact extends beyond simple information disclosure, as the ability to conduct man-in-the-middle attacks provides attackers with opportunities to manipulate support communications and potentially escalate privileges. Network administrators may unknowingly provide attackers with access to switch configuration details that could reveal network topology, device settings, and other sensitive operational information. The vulnerability particularly affects enterprise environments where Dell switches are deployed across critical network infrastructure, potentially compromising the security of entire network segments.
The exploitation of this vulnerability aligns with several ATT&CK techniques including T1566 for credential harvesting and T1046 for network service scanning, while the improper certificate validation directly maps to CWE-295 which addresses improper certificate validation. Organizations should implement immediate mitigations including updating to patched versions of Dell OS10, disabling unnecessary Support Assist functionality where possible, and monitoring network traffic for suspicious certificate validation failures. Security teams should also consider implementing network segmentation to limit access to affected switches and deploy intrusion detection systems capable of identifying man-in-the-middle attack patterns. The vulnerability underscores the critical importance of proper certificate validation in maintaining secure network communications and highlights the need for regular security assessments of network infrastructure components.