CVE-2022-29804: Path Traversal Vulnerability in stdlib package

Background

The stdlib package is a part of the Go ecosystem and provides a collection of standard libraries for various functionalities. It includes the path/filepath package, which offers functions for manipulating file paths. This vulnerability specifically affects the Clean function in the path/filepath package on Windows operating systems.

Vulnerability Detail

The Clean function in the path/filepath package on Windows can convert certain invalid paths to valid, absolute paths. This behavior can potentially be exploited by an attacker to perform a directory traversal attack. For example, the Clean(.\c:) function call returns c:, which is a valid absolute path. This vulnerability can lead to unauthorized access to sensitive files or directories outside the intended scope.

go get stdlib@vgo1.25.5

Workaround

If updating the package is not immediately feasible, a temporary workaround can be implemented by manually validating and sanitizing user-provided file paths. This can be done by ensuring that the file paths only contain allowed characters and do not include any directory traversal sequences. Here's an example of how to perform basic path validation in Go:

import (
    "path/filepath"
    "strings"
)

func validatePath(path string) bool {
    // Check if the path contains any directory traversal sequences
    if strings.Contains(path, "..") {
        return false
    }

    // Additional validation logic can be added as per requirements

    return true
}

Conclusion

In conclusion, the stdlib package in Go is vulnerable to a path traversal attack on Windows systems. It is crucial to update the affected package to the recommended versions or apply the provided workaround to mitigate the risk. For further assistance or support in vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for stdlib →

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