Vulnerability in Kernel: isofs Out-of-Bound Access
Summary
GSD-2021-1002073: isofs: Fix out of bound access for corrupted isofs image. Affects Kernel versions < 86d4aedcbc69c0f84551fb70f953c24e396de2d7. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel is a critical component of the Linux operating system that provides core functionality and interfaces with hardware devices. It manages system resources, facilitates communication between software and hardware, and ensures the stability and security of the system. The isofs module within the Kernel is responsible for handling ISO 9660 file systems commonly used in optical discs. This vulnerability in the isofs module allows for out-of-bound access when processing corrupted isofs images.
Vulnerability Detail
The vulnerability arises from a lack of proper bounds checking when processing corrupted isofs images. An attacker can exploit this by crafting a malicious isofs image that triggers the out-of-bound access, potentially leading to memory corruption or arbitrary code execution. The impact of this vulnerability depends on the attacker's ability to manipulate the corrupted image and the privileges of the user or process interacting with the image. It is crucial to address this vulnerability promptly to prevent potential security breaches and system instability.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, users can avoid processing or interacting with corrupted isofs images. This can be achieved by exercising caution when handling unfamiliar or suspicious ISO files. Additionally, implementing strict file validation checks and utilizing antivirus software can help detect and mitigate potential threats.
Conclusion
The vulnerability in the Kernel's isofs module, allowing for out-of-bound access when processing corrupted isofs images, poses a significant security risk. It is crucial to update the Linux Kernel to version v5.10.79 or later to mitigate this vulnerability. In the meantime, exercising caution when handling unfamiliar ISO files and implementing file validation checks can provide temporary protection. For further support and assistance, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability can vary depending on the attacker's capabilities and the privileges of the user or process interacting with the corrupted isofs image. It could potentially lead to memory corruption or arbitrary code execution, posing a significant security risk.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. The Vulert Playground allows you to analyze your application's manifest file, such as package-lock.json, without requiring code access or installation.
At the time of this report, there are no known public exploits targeting this specific vulnerability. However, it is crucial to apply the recommended fix or update to mitigate any potential risks.
This vulnerability requires an attacker to have access to a corrupted isofs image and the ability to trigger its processing. Therefore, remote exploitation is less likely unless the attacker can manipulate the image through other means, such as social engineering or delivering the image through a compromised system.
For further support and assistance in addressing this vulnerability, you can reach out to info@devnack.com. Our team of experts can provide guidance and help ensure the security of your system.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
