CVE-2007-4302 in Generic Software Wrappers Toolkit
Summary
by MITRE
Multiple race conditions in certain system call wrappers in Generic Software Wrappers Toolkit (GSWTK) allow local users to defeat system call interposition and possibly gain privileges or bypass auditing.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 12/29/2024
The vulnerability identified as CVE-2007-4302 resides within the Generic Software Wrappers Toolkit (GSWTK) and represents a critical security flaw that exploits race conditions in system call wrappers. This issue affects local users who can leverage the race conditions to circumvent system call interposition mechanisms that are typically employed for security monitoring and privilege control. The GSWTK serves as a framework for wrapping system calls to provide additional security features or auditing capabilities, but the race conditions present in its implementation create exploitable pathways for malicious actors.
The technical flaw manifests through multiple race conditions that occur within the system call wrapper functions, specifically during the transition between different states or when multiple processes attempt to access the same wrapper functionality simultaneously. These race conditions arise from insufficient synchronization mechanisms that should protect critical sections of code where system call interposition occurs. When a local user can manipulate timing conditions to their advantage, they can effectively bypass the intended security controls that would normally monitor or restrict system call execution. The vulnerability stems from improper handling of concurrent access to wrapper functions, allowing attackers to execute code or gain elevated privileges through carefully timed operations.
The operational impact of this vulnerability extends beyond simple privilege escalation to include potential bypass of security auditing mechanisms that organizations rely upon for compliance and monitoring purposes. Attackers who successfully exploit these race conditions can defeat the very security controls that system call interposition is designed to provide, potentially allowing them to execute unauthorized operations while remaining undetected by audit trails. This creates a dangerous scenario where malicious activities can occur without leaving traces that would normally be captured by security monitoring systems. The vulnerability affects systems where GSWTK is implemented as a security mechanism, particularly in environments where system call monitoring and privilege control are critical security requirements.
Mitigation strategies for this vulnerability require immediate implementation of proper synchronization mechanisms within the GSWTK wrapper functions to eliminate race conditions. Organizations should ensure that all critical sections of code that handle system call interposition are properly protected with appropriate locking mechanisms or atomic operations that prevent concurrent access issues. The solution involves implementing robust mutexes, semaphores, or other synchronization primitives to ensure that only one process can access the wrapper functionality at a time. Additionally, system administrators should consider disabling or removing GSWTK if it is not essential for security operations, as the risk of exploitation outweighs the benefits when such fundamental flaws exist. This vulnerability aligns with CWE-362, which describes race conditions, and represents a significant concern for systems that depend on proper system call interception for security monitoring. The attack pattern follows ATT&CK technique T1055 for privilege escalation and T1070 for bypassing security controls, making it particularly dangerous in enterprise environments where security auditing is paramount for compliance requirements.