GHSA-66pp-5p9w-q87j

Опубликовано: 26 мар. 2025

Источник: github

Github: Прошло ревью

CVSS4: 2.1

Описание

Shescape has potential environment variable exposure on Windows with CMD

Impact

This impact users of Shescape on Windows that explicitly configure shell: 'cmd.exe' or shell: true using any of quote/quoteAll/escape/escapeAll.

An attacker may be able to get read-only access to environment variables. Example:

import * as cp from "node:child_process"; import { Shescape } from "shescape"; // 1. Prerequisites const shescape = new Shescape({ shell: "cmd.exe", // Or shell: true, // Only if the default shell is CMD }); // 2. Payload const payload = '"%PATH%'; // 3. Usage let escapedPayload; escapedPayload = shescape.quote(payload); // Or escapedPayload = shescape.quoteAll([payload]); // Or escapedPayload = shescape.escape(payload); // Or escapedPayload = shescape.escapeAll([payload]); // And (example) const result = cp.execSync(`echo Hello ${escapedPayload}`, options); // 4. Impact console.log(result.toString()); // Outputs "Hello" followed by the contents of the PATH environment variable

For Shescape prior to v2.0.0, the options object must have shell: 'cmd.exe' or shell: undefined and interpolation: true.

Patches

This bug has been patched in v2.1.2 which you can upgrade to now.

If you are already using v2 of Shescape, no further changes are required. If you are using v1 of Shescape, follow the migration guide to upgrade to v2. There is no plan to release a patch compatible with v1 of Shescape.

Workarounds

Alternatively, users can remove all instances of % from user input before using Shescape.

References

Shescape Pull Request #1916
Shescape commit 0a81f1e
Shescape release v2.1.2

For more information

Comment on Pull Request #1916
Comment on commit 0a81f1e
Open an issue at https://github.com/ericcornelissen/shescape/issues (New issue > Question)

Ссылки

Пакеты

Наименование

shescape

npm

Затронутые версииВерсия исправления

>= 1.7.2, < 2.1.2

2.1.2

EPSS

Процентиль: 15%

0.00049

Низкий

2.1 Low

CVSS4

CVE ID

CVE-2025-30222

Дефекты

CWE-200

Связанные уязвимости

CVE-2025-30222

nvd

11 месяцев назад

Shescape is a simple shell escape library for JavaScript. Versions 1.7.2 through 2.1.1 are vulnerable to potential environment variable exposure on Windows with CMD. This impact users of Shescape on Windows that explicitly configure `shell: 'cmd.exe'` or `shell: true` using any of `quote`/`quoteAll`/`escape`/`escapeAll`. An attacker may be able to get read-only access to environment variables. This bug has been patched in v2.1.2. For those who are already using v2 of Shescape, no further changes are required. Those who are are using v1 of Shescape should follow the migration guide to upgrade to v2. There is no plan to release a patch compatible with v1 of Shescape. As a workaround, users can remove all instances of `%` from user input before using Shescape.

EPSS

Процентиль: 15%

0.00049

Низкий

2.1 Low

CVSS4

CVE ID

CVE-2025-30222

Дефекты

CWE-200