CVE-2022-38698 in SC9863A
Summary
by MITRE • 10/14/2022
In messaging service, there is a missing permission check. This could lead to elevation of privilege in contacts service with no additional execution privileges needed.
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Analysis
by VulDB Data Team • 06/24/2026
The vulnerability identified as CVE-2022-38698 represents a critical authorization flaw within a messaging service that exposes the contacts service to unauthorized privilege escalation. This issue stems from a missing permission check that allows malicious actors to bypass normal access controls and elevate their privileges without requiring additional execution privileges. The flaw exists at the service boundary level where proper authentication and authorization mechanisms fail to validate user permissions before granting access to sensitive contact data. Such a vulnerability directly violates fundamental security principles of least privilege and principle of least authority, creating an exploitable path for attackers to gain elevated system access.
The technical implementation of this vulnerability manifests as a failure in the permission validation layer within the messaging service architecture. When users attempt to access or modify contact information through the contacts service, the system should verify that the requesting entity possesses appropriate authorization levels. However, due to the missing permission check, the service processes these requests without proper validation, allowing any authenticated user to potentially access or manipulate contact data beyond their intended scope. This flaw operates at the application logic level and can be categorized under CWE-284 which specifically addresses improper access control vulnerabilities. The vulnerability is particularly concerning because it requires no additional execution privileges, meaning that an attacker can exploit this weakness using only standard user credentials.
The operational impact of CVE-2022-38698 extends beyond simple data access, as it creates a pathway for attackers to establish persistent access to sensitive contact information and potentially leverage this access for further exploitation. Attackers could use this privilege escalation to access personal contact details, communication patterns, and potentially sensitive business contact information that could be used for social engineering attacks or targeted phishing campaigns. The vulnerability's low attack complexity and high impact potential align with ATT&CK technique T1078 which covers valid accounts and privilege escalation through legitimate credentials. Organizations may experience data breaches, privacy violations, and potential regulatory compliance issues, particularly in environments where contact information contains personally identifiable information or corporate sensitive data.
Mitigation strategies for this vulnerability should focus on implementing robust permission validation mechanisms throughout the messaging service architecture. Security patches must be applied to ensure that all service calls to the contacts service include proper authorization checks before executing any privileged operations. Organizations should implement comprehensive access control policies that enforce role-based access control (RBAC) and ensure that all user interactions with contact data are properly authenticated and authorized. Additional defensive measures include regular security code reviews, implementation of automated permission validation checks, and monitoring for unauthorized access attempts. The fix should address the root cause by ensuring that all service interfaces properly validate user permissions before processing any requests, thereby preventing unauthorized privilege escalation. Organizations should also conduct thorough penetration testing to validate that the permission checks are properly implemented and that no similar vulnerabilities exist in related services or components.