CVE-2010-5178 in ThreatFire
Summary
by MITRE
** DISPUTED ** Race condition in ThreatFire 4.7.0.17 on Windows XP allows local users to bypass kernel-mode hook handlers, and execute dangerous code that would otherwise be blocked by a handler but not blocked by signature-based malware detection, via certain user-space memory changes during hook-handler execution, aka an argument-switch attack or a KHOBE attack. NOTE: this issue is disputed by some third parties because it is a flaw in a protection mechanism for situations where a crafted program has already begun to execute.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 02/19/2019
The vulnerability described in CVE-2010-5178 represents a significant race condition within ThreatFire 4.7.0.17's kernel-mode hook handler implementation on Windows XP systems. This flaw exists in the protection mechanism designed to prevent malicious code execution by monitoring and blocking suspicious kernel-level activities. The vulnerability operates through a sophisticated attack vector that exploits timing inconsistencies in the system's defensive architecture, specifically targeting the interaction between user-space memory modifications and kernel-mode hook execution contexts.
The technical exploitation of this race condition involves an argument-switch attack or KHOBE attack methodology where local users can manipulate memory contents during the brief window when kernel-mode hook handlers are executing. This creates a temporal vulnerability where the system's protective mechanisms fail to properly validate the execution context, allowing malicious code to bypass signature-based malware detection while still evading kernel-mode hook handlers. The flaw essentially enables attackers to execute dangerous code that would normally be blocked by the hook handlers but remains undetected by traditional signature-based systems due to the timing manipulation.
From an operational impact perspective, this vulnerability represents a critical compromise of endpoint security mechanisms that rely on kernel-mode protection. The attack vector specifically targets Windows XP systems where ThreatFire's kernel-mode components are active, potentially allowing local privilege escalation and code execution bypass. The vulnerability's disputed nature stems from the fact that it operates within a scenario where malicious code has already begun execution, making it a flaw in the protection mechanism rather than a primary attack vector. However, the implications remain severe as it undermines the integrity of kernel-mode security controls that are fundamental to system protection.
The vulnerability aligns with CWE-362, which describes race conditions that can lead to security flaws in concurrent systems, and demonstrates characteristics consistent with ATT&CK technique T1055 for privilege escalation and defense evasion. The attack methodology leverages the timing window between user-space memory modifications and kernel-mode hook execution, creating a scenario where the system's security controls are temporarily ineffective. Organizations using ThreatFire on Windows XP systems face significant risk as this vulnerability allows bypass of critical kernel-mode protections that would normally prevent malicious code execution.
Mitigation strategies should focus on immediate system updates and patches from the vendor, though the disputed nature of this vulnerability suggests it may not be classified as a primary security flaw. System administrators should implement additional monitoring for suspicious memory modifications and kernel activity patterns, while also considering the broader implications of running legacy systems with outdated security mechanisms. The vulnerability highlights the importance of comprehensive security testing that includes timing and concurrency considerations, particularly for systems that rely heavily on kernel-mode protection mechanisms.