CVE-2022-31180
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
01/08/2022
Last modified:
24/07/2023
Description
Shescape is a simple shell escape package for JavaScript. Affected versions were found to have insufficient escaping of white space when interpolating output. This issue only impacts users that use the `escape` or `escapeAll` functions with the `interpolation` option set to `true`. The result is that if an attacker is able to include whitespace in their input they can: 1. Invoke shell-specific behaviour through shell-specific special characters inserted directly after whitespace. 2. Invoke shell-specific behaviour through shell-specific special characters inserted or appearing after line terminating characters. 3. Invoke arbitrary commands by inserting a line feed character. 4. Invoke arbitrary commands by inserting a carriage return character. Behaviour number 1 has been patched in [v1.5.7] which you can upgrade to now. No further changes are required. Behaviour number 2, 3, and 4 have been patched in [v1.5.8] which you can upgrade to now. No further changes are required. The best workaround is to avoid having to use the `interpolation: true` option - in most cases using an alternative is possible, see [the recipes](https://github.com/ericcornelissen/shescape#recipes) for recommendations. Alternatively, users may strip all whitespace from user input. Note that this is error prone, for example: for PowerShell this requires stripping `'\u0085'` which is not included in JavaScript's definition of `\s` for Regular Expressions.
Impact
Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:shescape_project:shescape:*:*:*:*:*:*:*:* | 1.4.0 (including) | 1.5.8 (excluding) |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- https://github.com/ericcornelissen/shescape/pull/322
- https://github.com/ericcornelissen/shescape/pull/324
- https://github.com/ericcornelissen/shescape/releases/tag/v1.5.7
- https://github.com/ericcornelissen/shescape/releases/tag/v1.5.8
- https://github.com/ericcornelissen/shescape/security/advisories/GHSA-44vr-rwwj-p88h



