GHSA-cgw6-f3mj-h742

Suggest an improvement
Source
https://github.com/advisories/GHSA-cgw6-f3mj-h742
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/06/GHSA-cgw6-f3mj-h742/GHSA-cgw6-f3mj-h742.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-cgw6-f3mj-h742
Aliases
Published
2022-06-17T00:18:08Z
Modified
2023-11-08T04:07:23.363783Z
Summary
RustEmbed generated `get` method allows for directory traversal when reading files from disk
Details

When running in debug mode and the debug-embed (off by default) feature is not enabled, the generated get method does not check that the input path is a child of the folder given.

This allows attackers to read arbitrary files in the file system if they have control over the filename given. The following code will print the contents of your /etc/passwd if adjusted with a correct number of ../s depending on where it is run from.

#[derive(rust_embed::RustEmbed)]
#[folder = "src/"]
pub struct Asset;

fn main() {
    let d = Asset::get("../../../etc/passwd").unwrap().data;
    println!("{}", String::from_utf8_lossy(&d));
}

The flaw was corrected by canonicalizing the input filename and ensuring that it starts with the canonicalized folder path.

Database specific
{
    "nvd_published_at": null,
    "cwe_ids": [
        "CWE-22"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-17T00:18:08Z"
}
References

Affected packages

crates.io / rust-embed

Package

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.3.0