CVE-2008-2513 in AIX
Summary
by MITRE
Buffer overflow in the kernel in IBM AIX 5.2, 5.3, and 6.1 allows local users to execute arbitrary code in kernel mode via unknown attack vectors.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 05/27/2025
The vulnerability identified as CVE-2008-2513 represents a critical buffer overflow condition within the kernel of IBM AIX operating systems version 5.2, 5.3, and 6.1. This flaw resides at the core level of the operating system where kernel memory management is handled, making it particularly dangerous as it can be exploited by local attackers to gain elevated privileges and execute arbitrary code with kernel-level permissions. The buffer overflow occurs in the kernel space, which means that any successful exploitation would allow an attacker to bypass standard user-mode protections and directly manipulate system resources, potentially leading to complete system compromise. The vulnerability's classification as a local privilege escalation issue indicates that attackers must already have some level of access to the system, typically through a legitimate user account or service, before attempting exploitation.
The technical nature of this buffer overflow stems from improper bounds checking within kernel functions that process input data from user-space applications. When the kernel receives data that exceeds the allocated buffer size, it can overwrite adjacent memory locations, potentially corrupting critical kernel data structures or even allowing the attacker to inject and execute malicious code. This type of vulnerability falls under the Common Weakness Enumeration category CWE-121, which specifically addresses stack-based buffer overflow conditions. The attack vectors remain unspecified in the public description, suggesting that the vulnerability may be triggered through various kernel interfaces or system calls that handle user input without adequate validation mechanisms. The exploitation typically involves crafting specific input patterns that cause the buffer to overflow and overwrite return addresses or function pointers, enabling code execution control flow manipulation.
The operational impact of CVE-2008-2513 extends far beyond simple privilege escalation, as it can lead to complete system compromise and persistent access to the affected IBM AIX systems. Once a local attacker successfully exploits this vulnerability, they can execute arbitrary code with the highest system privileges, potentially allowing them to install rootkits, modify system binaries, access sensitive data, or establish backdoor access that persists across system reboots. The vulnerability affects enterprise systems running IBM AIX 5.2, 5.3, and 6.1, which are commonly deployed in mission-critical environments where system integrity and data security are paramount. Organizations using these older AIX versions face significant risk as the vulnerability can be leveraged to undermine the security posture of their entire network infrastructure, particularly in environments where system administrators have not applied the necessary security patches.
Mitigation strategies for CVE-2008-2513 primarily focus on immediate patch deployment and system hardening measures to prevent exploitation attempts. IBM has released security patches specifically addressing this vulnerability, which should be applied immediately to all affected systems. System administrators should implement the principle of least privilege by ensuring that local accounts have minimal necessary permissions and that unnecessary services are disabled. Network segmentation and monitoring solutions should be employed to detect suspicious activities that might indicate attempted exploitation, particularly focusing on anomalous system calls or memory access patterns. The vulnerability aligns with ATT&CK technique T1068 which covers 'Exploitation for Privilege Escalation' and T1059 which covers 'Command and Scripting Interpreter' as attackers may use the elevated privileges to execute additional malicious commands. Organizations should also consider implementing kernel integrity protection mechanisms and regular vulnerability assessments to identify similar issues within their system configurations, as this type of kernel-level vulnerability often indicates broader security weaknesses in the operating system's security architecture.