Heap Buffer Overflow Vulnerability in f2fs-tools Package
Summary
ALPINE-CVE-2020-6108: An exploitable code execution vulnerability exists in the fsck_chk_orphan_node functionality of F2fs-Tools F2fs.Fsck 1.13. Affects f2fs-tools versions < 1.14.0-r0. Fixed in 1.14.0-r0. How to fix ↓
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Background
f2fs-tools is a set of utilities for managing F2FS (Flash-Friendly File System), which is designed for NAND flash memory storage. It provides tools for formatting, checking, and repairing F2FS filesystems. The package is widely used in environments where flash storage is prevalent, making its security critical. This specific vulnerability affects versions prior to 1.14.0-r0, allowing attackers to exploit the system through specially crafted files.
Vulnerability Detail
An exploitable code execution vulnerability exists in the fsck_chk_orphan_node functionality of F2fs-Tools F2fs.Fsck 1.13. A specially crafted f2fs filesystem can cause a heap buffer overflow, leading to potential code execution. This vulnerability can be triggered by an attacker providing a malicious file, which could compromise the integrity and security of the system. The CVSS score for this vulnerability is 7.8, indicating a high severity level.
How To Fix
Minimum fixed version
1.14.0-r0
This is the first release that contains the fix.
sudo apk add --upgrade f2fs-toolsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If an immediate update is not feasible, consider restricting access to the f2fs-tools utilities to trusted users only, thereby minimizing the risk of exploitation until the package can be updated.
Conclusion
The f2fs-tools package has a critical vulnerability that can lead to code execution through a heap buffer overflow. It is essential to update to the patched version 1.14.0-r0 to safeguard your system. Until then, consider implementing access restrictions as a temporary measure.
See every vulnerability recorded for f2fs-tools →
FAQ
The vulnerability is a heap buffer overflow that can lead to code execution when a specially crafted f2fs filesystem is processed.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
Exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system, potentially leading to data loss or unauthorized access.
Yes, you can limit access to the f2fs-tools utilities to trusted users to reduce the risk of exploitation until the package is updated.
The CVSS score of this vulnerability is 7.8, indicating a high severity level.
References
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