CVE-2007-1822 in Voice Mail System
Summary
by MITRE
Alcatel-Lucent Lucent Technologies voice mail systems allow remote attackers to retrieve or remove messages, or reconfigure mailboxes, by spoofing Calling Number Identification (CNID, aka Caller ID).
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Analysis
by VulDB Data Team • 07/23/2024
The vulnerability described in CVE-2007-1822 represents a critical security flaw in Alcatel-Lucent Lucent Technologies voice mail systems that stems from improper authentication mechanisms within the Calling Number Identification (CNID) feature. This weakness allows remote attackers to exploit the system's trust in caller ID information to perform unauthorized actions on voice mail accounts. The vulnerability specifically targets the authentication process that relies on CNID data, which is typically used to identify incoming calls and display caller information to recipients. When systems trust this information without proper verification, they become susceptible to spoofing attacks where malicious actors can manipulate the caller ID to appear as legitimate users or system administrators.
The technical implementation of this vulnerability involves the exploitation of trust relationships within the voice mail system's communication protocols. Attackers can craft malicious CNID data that appears to originate from authorized users or administrative accounts, thereby bypassing authentication checks that should verify legitimate access rights. This flaw operates at the application layer of network communications and represents a classic case of insufficient input validation and authentication controls. The vulnerability is particularly dangerous because it allows for multiple types of unauthorized actions including message retrieval, message deletion, and mailbox reconfiguration, which collectively provide comprehensive access to voice mail functionality. The attack vector is remote, meaning no physical access or local network presence is required to exploit this weakness, making it particularly attractive to threat actors seeking to compromise voice mail systems at scale.
The operational impact of this vulnerability extends far beyond simple unauthorized access to voice mail messages. Organizations relying on these systems face significant risks including unauthorized surveillance of confidential communications, potential data breaches involving sensitive personal or business information, and disruption of critical communication channels. The ability to reconfigure mailboxes allows attackers to modify system settings, potentially creating backdoors or disabling security features entirely. This vulnerability directly impacts the confidentiality, integrity, and availability of voice mail services, creating a potential attack surface that could be leveraged for more sophisticated attacks including social engineering campaigns or further network infiltration. The attack requires minimal technical expertise to execute, making it accessible to a wide range of threat actors from casual hackers to organized cybercriminal groups.
The security implications of this vulnerability align with several common attack patterns documented in the MITRE ATT&CK framework, particularly those related to credential access and privilege escalation techniques. The flaw enables attackers to gain unauthorized access to voice mail systems through social engineering and technical manipulation, representing a form of identity spoofing that bypasses traditional authentication mechanisms. From a CWE perspective, this vulnerability corresponds to CWE-287, which addresses improper authentication, and CWE-310, which covers cryptographic weaknesses in authentication. Organizations should implement multiple layers of security controls including stronger authentication mechanisms, network segmentation to limit access to voice mail systems, and monitoring of unusual CNID patterns that might indicate spoofing attempts. Additionally, the vulnerability highlights the importance of validating all incoming identification data regardless of its source, implementing proper access controls, and regularly updating and patching voice mail systems to address known vulnerabilities.
Mitigation strategies should focus on implementing robust authentication mechanisms that do not rely solely on caller ID information, including multi-factor authentication for administrative access to voice mail systems. Network security measures such as implementing firewalls and access control lists can help limit exposure to unauthorized network access, while monitoring systems should be deployed to detect anomalous CNID patterns that might indicate spoofing attempts. Regular security audits and vulnerability assessments should be conducted to identify similar weaknesses in voice mail systems and other communication infrastructure. System administrators should also implement proper logging and alerting mechanisms to track access attempts and changes to mailbox configurations, enabling rapid detection and response to potential exploitation attempts. The vulnerability serves as a reminder that even seemingly simple identification mechanisms can create significant security risks when not properly validated and secured against manipulation.