CVE-2022-33693 in Smart Phone
Summary
by MITRE • 07/12/2022
Exposure of Sensitive Information in CID Manager prior to SMR Jul-2022 Release 1 allows local attacker to access iccid via log.
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Analysis
by VulDB Data Team • 07/23/2022
The vulnerability identified as CVE-2022-33693 represents a critical information disclosure flaw within the CID Manager component of a mobile device firmware system. This weakness specifically affects devices prior to the SMR Jul-2022 Release 1 update, creating a persistent security risk that enables local attackers to extract sensitive identification information. The vulnerability stems from improper handling of sensitive data within system logs, where the iccid (integrated circuit card identifier) value is inadvertently exposed during normal operational logging processes. This exposure occurs because the system fails to adequately sanitize or redact sensitive information before writing it to log files, which are typically accessible to local user accounts with appropriate privileges.
The technical implementation of this vulnerability involves the logging subsystem's failure to implement proper data sanitization mechanisms for sensitive identifiers. When the CID Manager component processes SIM card information, it stores the iccid value in system logs without adequate protection measures. This design flaw aligns with CWE-200, which addresses the exposure of sensitive information to an unauthorized actor, and specifically relates to CWE-532, which covers the insertion of sensitive information into log files. The vulnerability exists at the intersection of improper logging practices and insufficient access controls, where local accounts can read system logs and extract the iccid value that should remain protected.
From an operational perspective, this vulnerability creates significant risk for device users and organizations managing mobile device fleets. The iccid value serves as a unique identifier for SIM cards and can be used for tracking, profiling, or even SIM card cloning activities. Local attackers with minimal privileges can exploit this vulnerability to obtain sensitive information that could lead to service disruption, unauthorized access to mobile services, or identity theft. The impact extends beyond individual device security to potential network-level consequences, as the iccid information can be used to correlate device usage patterns or target specific users for further attacks. This vulnerability particularly affects enterprise environments where mobile device management systems rely on proper identification mechanisms, and where unauthorized access to SIM card identifiers could compromise security protocols.
The mitigation strategies for CVE-2022-33693 primarily focus on applying the vendor-provided security update released in the SMR Jul-2022 Release 1. Organizations should prioritize immediate deployment of this patch to address the root cause of the vulnerability. Additionally, system administrators should implement log file access controls to restrict read permissions on system log files containing sensitive information. The implementation of proper log sanitization processes should be enforced to ensure that sensitive data such as iccid values are either redacted or encrypted before logging. Security monitoring should include detection of unauthorized access attempts to system logs and regular auditing of log file contents for potential exposure of sensitive information. This vulnerability demonstrates the importance of following the principle of least privilege and proper data handling practices as outlined in the NIST Cybersecurity Framework and aligns with ATT&CK technique T1070.001 for Indicator Removal on Host, as the vulnerability creates persistent indicators of compromise that could be exploited by threat actors.