What is CVE-2005-0985?

CVE-2005-0985 is a publicly disclosed cybersecurity vulnerability with a LOW severity rating and CVSS score of 2.1.

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CVE-2005-0985

LOW2.1/ 10.0

Published: December 31, 2005 at 05:00 AM

Modified: April 3, 2025 at 01:03 AM

Source: cve@mitre.org

Vulnerability Description

Unspecified vulnerability in the Mac OS X kernel before 10.3.8 allows local users to cause a denial of service (temporary hang) via unspecified attack vectors related to the fan control unit (FCU) driver.

CVSS Metrics

Base Score

2.1

Severity

LOW

Vector String

AV:L/AC:L/Au:N/C:N/I:N/A:P

Weaknesses (CWE)

NVD-CWE-Other

Source: nvd@nist.gov

AI Security Analysis

01 // Technical Summary

Local users can trigger a denial-of-service (DoS) condition on affected Mac OS X systems by exploiting a vulnerability within the fan control unit (FCU) driver. This allows an attacker to temporarily halt system operations, potentially disrupting critical services and impacting system availability. The specific attack vectors remain unspecified, making it challenging to fully assess the scope of this vulnerability without further information.

02 // Vulnerability Mechanism

Step 1: Triggering the Vulnerability: A local user, with access to the system, attempts to interact with the FCU driver. The exact method of interaction is unspecified in the CVE, but could involve a specially crafted system call, a malicious application, or a crafted input to an existing application that interacts with the FCU driver. Step 2: Driver Interaction: The user's action causes the kernel to execute code within the FCU driver. Step 3: Vulnerability Exploitation: The driver's code contains a flaw that is triggered by the user's action. This could be a race condition, a memory corruption issue, or an input validation problem. Step 4: Denial of Service: The triggered flaw causes the system to hang or become unresponsive. This is likely due to a deadlock, resource exhaustion, or a crash within the driver.

03 // Deep Technical Analysis

The vulnerability resides within the Mac OS X kernel's FCU driver. The root cause is likely related to improper handling of input or state management within the driver's interaction with the hardware fan control mechanisms. Without specific details, it's difficult to pinpoint the exact flaw, but possibilities include a race condition in how the driver handles fan control requests, leading to a deadlock or resource exhaustion. Another possibility is an issue with how the driver processes data related to fan speed or temperature readings, potentially leading to a crash or hang if malformed data is provided. The unspecified nature of the vulnerability makes it difficult to determine the exact cause, but the impact is a temporary system hang, suggesting a problem related to resource contention or a software lockup within the driver.