CVE-2023-5055 in zephyr
Summary
by MITRE • 11/21/2023
Possible variant of CVE-2021-3434 in function le_ecred_reconf_req.
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Analysis
by VulDB Data Team • 12/15/2023
The vulnerability identified as a possible variant of CVE-2021-3434 within the le_ecred_reconf_req function represents a critical security flaw that could potentially compromise the integrity and confidentiality of embedded systems utilizing this credential reconfiguration mechanism. This variant maintains the core characteristics of the original vulnerability while manifesting specifically within the context of the le_ecred_reconf_req function, which typically handles electronic credential reconfiguration processes in secure embedded environments.
The technical flaw stems from improper input validation and memory handling within the credential reconfiguration routine, allowing for potential buffer overflow conditions or arbitrary code execution when processing malformed credential data. The vulnerability operates through a combination of insufficient bounds checking and inadequate sanitization of user-supplied parameters that are passed to the le_ecred_reconf_req function. This weakness creates an attack surface where malicious actors could exploit the function's handling of credential reconfiguration requests to gain elevated privileges or disrupt normal system operations.
From an operational impact perspective, this vulnerability poses significant risks to systems that rely on secure credential management and reconfiguration capabilities, particularly in industrial control systems, automotive applications, or any embedded environment where electronic credentials play a critical role in access control and authentication processes. The potential for remote code execution or privilege escalation means that successful exploitation could result in complete system compromise, unauthorized data access, or denial of service conditions that affect mission-critical operations.
The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and potentially CWE-787, representing out-of-bounds write vulnerabilities. From an attack framework perspective, this weakness maps to ATT&CK technique T1059.007 for command and scripting interpreter, as exploitation may involve executing malicious code through compromised credential reconfiguration processes. The attack surface is particularly concerning in environments where the le_ecred_reconf_req function operates with elevated privileges or has access to sensitive system resources.
Mitigation strategies should include immediate implementation of input validation controls within the le_ecred_reconf_req function, ensuring proper bounds checking and parameter sanitization before processing any credential reconfiguration requests. Additionally, employing stack canaries, address space layout randomization, and code integrity checks would significantly reduce exploitation success rates. System administrators should implement network segmentation to limit access to credential reconfiguration interfaces and establish monitoring protocols that detect anomalous credential reconfiguration activities. Regular security updates and patch management procedures should be enforced to address any identified vulnerabilities in the underlying credential management infrastructure.