GitHub Advisoryadvisory · npm

GHSA-7r3h-m5j6-3q42 @actions/core has Delimiter Injection Vulnerability in exportVariable

MEDIUM Published 2022-08-18 Modified 2022-08-18 Official page ↗
Aliases
CVE-2022-35954
Ecosystem
npm
Packages
@actions/core
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Weaknesses
CWE-74, CWE-77
Reviewed
2022-08-18

Affected packages

• npm @actions/core: < 1.9.1 → fixed in 1.9.1

Description

Impact The `core.exportVariable` function uses a well known delimiter that attackers can use to break out of that specific variable and assign values to other arbitrary variables. Workflows that write untrusted values to the `GITHUB_ENV` file may cause the path or other environment variables to be modified without the intention of the workflow or action author. Patches Users should upgrade to `@actions/core v1.9.1`. Workarounds If you are unable to upgrade the `@actions/core` package, you can modify your action to ensure that any user input does not contain the delimiter `_GitHubActionsFileCommandDelimeter_` before calling `core.exportVariable`. References More information about setting-an-environment-variable in workflows If you have any questions or comments about this advisory: • Open an issue in `actions/toolkit`

Related

Alias · CVE (1)

  • CVE-2022-35954 The GitHub Actions ToolKit provides a set of packages to make creating actions easier. vulnerability

Weakness · CWE (2)

  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component weakness
  • CWE-77 Improper Neutralization of Special Elements used in a Command weakness

References