CVE-2020-7665: Path Traversal in u-root in github.com/u-root/u-root
Summary
CVE-2020-7665: Path traversal in u-root in github.com/u-root/u-root. Affects github.com/u-root/u-root versions < 0.9.0. Fixed in 0.9.0. How to fix ↓
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Background
The package under scrutiny is github.com/u-root/u-root, an open-source project written in Go. u-root is a collection of Go packages and commands that aims to create a root file system (initramfs) containing a busybox-like set of tools. It is commonly used for building Linux-based firmware images. The package provides various functionalities for system initialization, including booting, device discovery, and configuration. However, a vulnerability has been discovered in u-root that allows for path traversal attacks.
Vulnerability Detail
The vulnerability in u-root arises from a path traversal flaw. An attacker can exploit this flaw to access files or directories outside of the intended directory structure. By manipulating input parameters, an attacker can traverse the file system and potentially access sensitive files or execute arbitrary code. This vulnerability poses a significant risk as it can lead to unauthorized access, data leakage, and remote code execution.
How To Fix
Minimum fixed version
0.9.0
This is the first release that contains the fix.
go get github.com/u-root/u-root@v0.9.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is essential to update u-root to the fixed version to mitigate the risk of exploitation.
Conclusion
The path traversal vulnerability in u-root poses a significant risk to systems utilizing this package. It allows for unauthorized access to files and directories outside of the intended structure, potentially leading to data leakage and remote code execution. It is crucial to update u-root to version 0.9.0 or later to mitigate this vulnerability.
See every vulnerability recorded for github.com/u-root/u-root →
FAQ
u-root is an open-source project written in Go that provides a collection of packages and commands for creating a root file system (initramfs) with a set of tools similar to busybox.
The vulnerability allows for path traversal attacks, enabling unauthorized access to files or directories outside of the intended structure. This can lead to data leakage, unauthorized code execution, and other security breaches.
To fix this vulnerability, update u-root to version 0.9.0 or later. This version includes the necessary patches to address the path traversal flaw.
No known workarounds exist for this vulnerability. Updating to the fixed version is the recommended solution.
You can find more information about this vulnerability in the official vulnerability report at https://pkg.go.dev/vuln/GO-2022-0793.
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