CVE-2010-0504 in Mac OS X
Summary
by MITRE
Multiple stack-based buffer overflows in iChat Server in Apple Mac OS X Server before 10.6.3 allow remote attackers to execute arbitrary code or cause a denial of service (application crash) via unspecified vectors.
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Analysis
by VulDB Data Team • 05/04/2026
The vulnerability identified as CVE-2010-0504 represents a critical stack-based buffer overflow issue affecting iChat Server component within Apple Mac OS X Server versions prior to 10.6.3. This flaw resides in the server-side implementation of the iChat messaging service that facilitates instant messaging and presence information exchange within Apple's enterprise ecosystem. The buffer overflow conditions arise from insufficient input validation and memory management practices within the server's processing routines, creating opportunities for malicious actors to manipulate memory structures through carefully crafted network requests.
The technical exploitation of this vulnerability occurs when remote attackers send specially formatted data packets to the iChat Server service, which then processes these inputs without adequate bounds checking. The stack-based nature of the overflow indicates that the vulnerable code manipulates local variables and function call information stored on the program stack, allowing attackers to overwrite adjacent memory locations including return addresses and control flow information. This type of vulnerability maps directly to CWE-121 Stack-based Buffer Overflow, which is categorized under the broader weakness classification of buffer overflow conditions that can lead to arbitrary code execution or system instability.
The operational impact of CVE-2010-0504 extends beyond simple denial of service scenarios to encompass full system compromise capabilities. Remote attackers can leverage this vulnerability to execute arbitrary code with the privileges of the iChat Server process, potentially escalating their access to the entire server system. The vulnerability affects the core messaging infrastructure of Mac OS X Server, which could disrupt business communications and provide attackers with persistent access points for further reconnaissance and lateral movement within network environments. Organizations relying on iChat Server for enterprise communications face significant risk of unauthorized access and data compromise.
The exploitation of this vulnerability aligns with several tactics described in the MITRE ATT&CK framework, particularly those related to remote code execution and privilege escalation. Attackers can utilize this flaw as part of initial access vectors within target networks, potentially using the compromised iChat Server as a foothold for broader infiltration activities. The vulnerability's remote exploitability makes it particularly dangerous in enterprise environments where server systems are often exposed to external network traffic. Security professionals should consider implementing network segmentation and access controls to limit exposure while applying the necessary security patches to remediate the underlying buffer overflow conditions.
Organizations should prioritize immediate patch deployment to address this vulnerability, as Apple released Mac OS X Server 10.6.3 specifically to resolve these buffer overflow issues. The remediation process involves updating to the latest server software version and conducting thorough security assessments of affected systems. Additionally, network monitoring should be enhanced to detect suspicious traffic patterns that may indicate exploitation attempts, while security teams should implement proper input validation and memory management practices in custom applications that interface with similar messaging protocols. The vulnerability serves as a reminder of the critical importance of maintaining current security patches and implementing defense-in-depth strategies to protect enterprise infrastructure from similar remote code execution threats.