CVE-2022-47634 in M-Link
Summary
by MITRE • 01/01/2023
M-Link Archive Server in Isode M-Link R16.2v1 through R17.0 before R17.0v24 allows non-administrative users to access and manipulate archive data via certain HTTP endpoints, aka LINK-2867.
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Analysis
by VulDB Data Team • 04/11/2025
The vulnerability identified as CVE-2022-47634 affects the M-Link Archive Server component within Isode M-Link software versions ranging from R16.2v1 through R17.0 before R17.0v24. This represents a critical authorization flaw that undermines the security model of the archive server system. The issue stems from insufficient access controls implemented within specific HTTP endpoints that handle archive data operations. Non-administrative users can exploit this weakness to gain unauthorized access and manipulation capabilities over archive data, effectively bypassing intended security boundaries. The vulnerability impacts organizations that rely on M-Link for secure data archiving and management, potentially exposing sensitive information to unauthorized personnel who should not possess administrative privileges.
The technical root cause of this vulnerability lies in the improper implementation of access control mechanisms within the HTTP endpoint handlers of the M-Link Archive Server. The system fails to adequately verify user privileges before allowing operations on archive data, creating a path for privilege escalation through web-based interfaces. This flaw manifests when legitimate HTTP requests are processed without sufficient authentication checks or role-based access validation. The vulnerability is classified under CWE-285 which specifically addresses improper authorization issues in software systems. Attackers can leverage this weakness by crafting specific HTTP requests that target the vulnerable endpoints, potentially gaining read, write, or modify access to archived data without proper administrative credentials. The absence of proper session validation and user privilege verification creates an exploitable gap in the security architecture.
The operational impact of CVE-2022-47634 extends beyond simple unauthorized access to encompass potential data integrity compromise and confidentiality breaches. Organizations utilizing affected M-Link versions face significant risks including unauthorized data manipulation, information disclosure, and potential audit trail corruption. The vulnerability can be exploited to alter archive contents, delete critical data, or extract sensitive information that should remain protected. This weakness directly impacts the principle of least privilege and can facilitate lateral movement within networks where M-Link systems are deployed. The attack surface is particularly concerning given that the vulnerability affects multiple versions of the software, indicating a persistent flaw in the authorization implementation. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation and credential access techniques, enabling adversaries to move from standard user accounts to gain administrative capabilities over archive systems.
Mitigation strategies for this vulnerability require immediate action from affected organizations to update to patched versions of Isode M-Link software. The vendor has released R17.0v24 which contains the necessary fixes to address this authorization flaw. Organizations should implement network segmentation to limit access to vulnerable HTTP endpoints and establish monitoring for suspicious HTTP requests targeting archive operations. Access controls should be reviewed and strengthened to ensure proper user privilege validation before allowing archive data operations. Security teams should conduct comprehensive vulnerability assessments to identify all instances of affected software within their infrastructure and implement temporary compensating controls such as firewall rules restricting access to vulnerable endpoints. The implementation of robust logging and monitoring for archive data access patterns can help detect exploitation attempts. Additionally, organizations should review their overall security posture and ensure proper user account management practices are in place to minimize the impact of potential privilege escalation scenarios.