CVE-2007-0710 in iChat
Summary
by MITRE
The Bonjour functionality in iChat in Apple Mac OS X 10.3.9 allows remote attackers to cause a denial of service (persistent application crash) via unspecified vectors, possibly related to CVE-2007-0614.
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Analysis
by VulDB Data Team • 07/22/2024
The vulnerability identified as CVE-2007-0710 affects the Bonjour networking functionality within iChat messaging application on Apple Mac OS X 10.3.9 systems. This issue represents a significant security concern as it enables remote attackers to trigger persistent application crashes that can lead to denial of service conditions. The vulnerability specifically targets the Bonjour service discovery mechanism that allows devices to automatically discover services on local networks without requiring centralized configuration. The flaw manifests when the iChat application processes certain network packets or service announcements that are part of the Bonjour protocol implementation, causing the application to become unresponsive and eventually crash repeatedly.
The technical nature of this vulnerability stems from insufficient input validation and error handling within the Bonjour implementation within iChat. When maliciously crafted network packets are received by the Bonjour service, they can trigger buffer overflows, memory corruption, or other processing errors that cause the application to enter an unstable state. The vulnerability is particularly concerning because it operates at the network level and can be exploited remotely without requiring authentication or physical access to the target system. This type of flaw aligns with CWE-121, which describes heap-based buffer overflow conditions, and CWE-122, which covers buffer overflow vulnerabilities in heap-based memory structures. The persistent nature of the crashes suggests that the vulnerability may involve improper memory management or resource cleanup mechanisms that prevent the application from recovering gracefully from the initial error condition.
The operational impact of CVE-2007-0710 extends beyond simple application instability to potentially disrupt communication services within corporate and personal networks. When iChat becomes unstable due to this vulnerability, users lose access to instant messaging functionality, which can severely impact productivity in environments where real-time communication is critical. The persistent crashing behavior means that even after users attempt to restart the application, the vulnerability can cause repeated failures, creating a cascading effect that may require system reboots to fully resolve. This vulnerability is particularly dangerous in networked environments where Bonjour services are actively used for device discovery and service advertisement, as attackers can exploit this weakness to systematically disrupt communication services across multiple devices. The relationship to CVE-2007-0614 indicates that this may be part of a broader family of vulnerabilities affecting the Bonjour implementation, suggesting that similar attack vectors could be present in other network discovery protocols or services.
Organizations and users should implement immediate mitigations to address this vulnerability, including updating to newer versions of Mac OS X where these issues have been resolved through patches and security updates. System administrators should consider disabling Bonjour services on network segments where they are not required, particularly in environments where untrusted network traffic may be present. Network segmentation and firewall rules can help limit exposure to this vulnerability by restricting access to Bonjour service discovery ports and preventing unauthorized packet injection. Additionally, monitoring network traffic for unusual Bonjour service announcements and implementing intrusion detection systems can help identify potential exploitation attempts. The vulnerability demonstrates the importance of proper input validation and error handling in network services, and aligns with ATT&CK technique T1499 which covers network denial of service attacks. Regular security assessments and vulnerability scanning should include checks for Bonjour service implementations to identify similar weaknesses that could be exploited to create similar denial of service conditions.