CVE Vulnerability

CVE-2022-31180

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.

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/ericcornelissen/shescape/pull/322 Patch Third Party Advisory
https://github.com/ericcornelissen/shescape/releases/tag/v1.5.7 Release Notes Third Party Advisory
https://github.com/ericcornelissen/shescape/pull/324 Patch Third Party Advisory
https://github.com/ericcornelissen/shescape/releases/tag/v1.5.8 Release Notes Third Party Advisory
https://github.com/ericcornelissen/shescape/security/advisories/GHSA-44vr-rwwj-p88h Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:shescape_project:shescape:*:*:*:*:*:*:*:*
Information

Published : 2022-08-01 08:15

Updated : 2022-08-09 05:36

NVD link : CVE-2022-31180

Mitre link : CVE-2022-31180

Products Affected
No products.
CWE
CWE-74