GHSA-446w-rrm4-r47f

Source

https://github.com/advisories/GHSA-446w-rrm4-r47f

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/03/GHSA-446w-rrm4-r47f/GHSA-446w-rrm4-r47f.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-446w-rrm4-r47f

Aliases

CVE-2022-24725

Published

2022-03-03T19:26:11Z

Modified

2023-11-08T04:08:33Z

Severity

5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

Exposure of home directory through shescape on Unix with Bash

Details

Impact

The issue allows for exposure of the home directory on Unix systems when using Bash with the escape or escapeAll functions from the shescape API with the interpolation option set to true. Other tested shells, Dash and Zsh, are not affected.

const cp = require("child_process");
const shescape = require("shescape");

const payload = "home_directory=~";
const options = { interpolation: true };
console.log(cp.execSync(`echo ${shescape.escape(payload, options)}`));
// home_directory=/home/user

Depending on how the output of shescape is used, directory traversal may be possible in the application using shescape.

Patches

The issue was patched in v1.5.1.

Workarounds

Manually escape all instances of the tilde character (~) using arg.replace(/~/g, "\\~").

References

See GitHub issue https://github.com/ericcornelissen/shescape/issues/169.

Database specific

{
    "cwe_ids": [
        "CWE-200",
        "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-03-03T19:26:11Z",
    "nvd_published_at": "2022-03-03T22:15:00Z",
    "severity": "MODERATE"
}

References

Affected packages

npm / shescape

Package

Name: shescape; View open source insights on deps.dev
Purl: pkg:npm/shescape

Affected ranges

Type: SEMVER
Events: Introduced

1.4.0

Fixed

1.5.1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/03/GHSA-446w-rrm4-r47f/GHSA-446w-rrm4-r47f.json"