GHSA-7R3H-M5J6-3Q42

Vulnerability from github – Published: 2022-08-18 19:01 – Updated: 2022-08-18 19:01
VLAI?
Summary
@actions/core has Delimiter Injection Vulnerability in exportVariable
Details

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

Severity ?
5.0 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.9.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@actions/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-35954"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-74",
      "CWE-77"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-08-18T19:01:36Z",
    "nvd_published_at": "2022-08-15T11:21:00Z",
    "severity": "MODERATE"
  },
  "details": "## Impact\n\nThe\u00a0`core.exportVariable`\u00a0function 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.\n\n## Patches\n\nUsers should upgrade to `@actions/core v1.9.1`.\n\n## Workarounds\n\nIf 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`.\n\n## References\n\n[More information about setting-an-environment-variable in workflows](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-environment-variable)\n\nIf you have any questions or comments about this advisory:\n* Open an issue in\u00a0[`actions/toolkit`](https://github.com/actions/toolkit/issues)\n",
  "id": "GHSA-7r3h-m5j6-3q42",
  "modified": "2022-08-18T19:01:36Z",
  "published": "2022-08-18T19:01:36Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/actions/toolkit/security/advisories/GHSA-7r3h-m5j6-3q42"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35954"
    },
    {
      "type": "WEB",
      "url": "https://github.com/actions/toolkit/commit/4beda9cbc00ba6eefe387a937c21087ccb8ee9df"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/actions/toolkit"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "@actions/core has Delimiter Injection Vulnerability in exportVariable"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.