CVE-2007-0670 in AIX
Summary
by MITRE
Buffer overflow in bos.rte.libc in IBM AIX 5.2 and 5.3 allows local users to execute arbitrary code via the "r-commands", possibly including (1) rdist, (2) rsh, (3) rcp, (4) rsync, and (5) rlogin.
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Analysis
by VulDB Data Team • 06/14/2025
The vulnerability identified as CVE-2007-0670 represents a critical buffer overflow condition within the bos.rte.libc component of IBM AIX operating systems version 5.2 and 5.3. This flaw specifically affects the remote command execution utilities that form the foundation of distributed computing environments, creating a significant security risk for systems relying on these services. The buffer overflow occurs in the runtime environment library that handles core system operations, making it particularly dangerous as it can be exploited by local attackers who have access to the system.
The technical implementation of this vulnerability stems from improper input validation within the r-commands suite, which includes rdist, rsh, rcp, rsync, and rlogin utilities. These commands are designed to facilitate remote execution and file transfer operations across networked systems, but the buffer overflow condition allows attackers to overwrite adjacent memory locations when processing command line arguments or network data. The flaw manifests when the system processes inputs that exceed the allocated buffer space, enabling attackers to manipulate the program execution flow and potentially inject malicious code.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it provides local users with the capability to execute arbitrary code with the privileges of the affected processes. This represents a severe compromise of system integrity since the r-commands are typically designed to operate with elevated privileges for their intended functions, making the exploitation particularly dangerous. Attackers could leverage this vulnerability to gain unauthorized access to system resources, modify critical files, or establish persistent backdoors within the network infrastructure.
Mitigation strategies for this vulnerability should focus on immediate system updates and patches provided by IBM to address the buffer overflow condition in the bos.rte.libc library. Organizations should implement network segmentation to limit access to systems running affected AIX versions and disable unnecessary r-commands services where possible. The implementation of proper input validation mechanisms and regular security audits can help identify similar vulnerabilities in other system components. This vulnerability aligns with CWE-121, which addresses stack-based buffer overflow conditions, and maps to ATT&CK technique T1059.007 for execution through remote services, emphasizing the need for comprehensive security measures that address both local and network-based attack vectors.