CVE-2007-5488 in Asterisk-Addons
Summary
by MITRE
Multiple SQL injection vulnerabilities in cdr_addon_mysql in Asterisk-Addons before 1.2.8, and 1.4.x before 1.4.4, allow remote attackers to execute arbitrary SQL commands via the (1) source and (2) destination numbers, and probably (3) SIP URI, when inserting a record.
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Analysis
by VulDB Data Team • 01/06/2025
The CVE-2007-5488 vulnerability represents a critical security flaw in the Asterisk telephony system's MySQL addon component, specifically affecting versions prior to 1.2.8 and 1.4.x before 1.4.4. This vulnerability resides within the cdr_addon_mysql module which handles call detail record storage and retrieval in Asterisk-based communication systems. The flaw manifests as multiple SQL injection vulnerabilities that can be exploited by remote attackers to execute arbitrary SQL commands, potentially compromising the entire telephony infrastructure. The vulnerability is particularly concerning because it affects core telephony functionality that records call information including source and destination numbers, making it a prime target for attackers seeking to manipulate or extract sensitive communication data.
The technical implementation of this vulnerability stems from improper input validation within the cdr_addon_mysql module where user-supplied data from call records is directly incorporated into SQL queries without adequate sanitization or parameterization. Attackers can manipulate the source and destination number fields, as well as potentially the SIP URI field, to inject malicious SQL payloads that bypass authentication mechanisms and execute unauthorized database operations. This occurs because the application constructs SQL queries by concatenating user input directly into the query string rather than using prepared statements or proper input filtering techniques. The vulnerability aligns with CWE-89 which specifically addresses SQL injection flaws, and represents a classic example of how insufficient input validation can lead to complete database compromise.
The operational impact of CVE-2007-5488 extends far beyond simple data manipulation, as successful exploitation can result in complete system compromise and unauthorized access to sensitive telephony data. Attackers can leverage this vulnerability to extract confidential information including caller details, call logs, and potentially authentication credentials stored within the database. The implications are particularly severe for organizations relying on Asterisk for business communications, as the vulnerability could enable eavesdropping on sensitive conversations, unauthorized call routing, and complete database enumeration. This vulnerability directly maps to ATT&CK technique T1190 for exploitation of remote services and T1071.004 for application layer protocol usage, making it a significant threat vector for both credential theft and data exfiltration attacks.
Mitigation strategies for CVE-2007-5488 require immediate implementation of software updates to versions 1.2.8 or 1.4.4 and later, which contain proper input validation and parameterized query implementations. Organizations should also implement network segmentation to limit access to telephony systems and deploy intrusion detection systems to monitor for suspicious SQL injection patterns. Database access controls should be hardened to restrict privileges of the telephony application, ensuring that even if exploitation occurs, the attacker's capabilities remain limited. Additionally, implementing proper input sanitization and using prepared statements in all database interactions will prevent similar vulnerabilities from occurring in other components of the telephony infrastructure. The vulnerability demonstrates the critical importance of maintaining up-to-date security patches and implementing proper secure coding practices in telephony and communication systems.