GHSA-2M9H-R57G-45PJ

Vulnerability from github – Published: 2024-12-04 15:32 – Updated: 2024-12-04 22:17
VLAI?
Summary
Downloading malicious GitHub Actions workflow artifact results in path traversal vulnerability
Details

Summary

A security vulnerability has been identified in GitHub CLI that could create or overwrite files in unintended directories when users download a malicious GitHub Actions workflow artifact through gh run download.

Details

This vulnerability stems from a GitHub Actions workflow artifact named .. when downloaded using gh run download. The artifact name and --dir flag are used to determine the artifact’s download path. When the artifact is named .., the resulting files within the artifact are extracted exactly 1 directory higher than the specified --dir flag value.

In 2.63.1, gh run download will not download artifacts named .. and . and instead exit with the following error message:

error downloading ..: would result in path traversal

Impact

Successful exploitation heightens the risk of local path traversal attack vectors exactly 1 directory higher than intended.

Remediation and Mitigation

  1. Upgrade gh to 2.63.1
  2. Implement additional validation to ensure artifact filenames do not contain potentially dangerous patterns, such as .., to prevent path traversal risks.
Severity ?
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/U:Green
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/cli/cli/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.63.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/cli/cli"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.14.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-54132"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-12-04T15:32:45Z",
    "nvd_published_at": "2024-12-04T16:15:26Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nA security vulnerability has been identified in GitHub CLI that could create or overwrite files in unintended directories when users download a malicious GitHub Actions workflow artifact through `gh run download`. \n\n### Details\n\nThis vulnerability stems from a GitHub Actions workflow artifact named `..` when downloaded using `gh run download`.  The artifact name and `--dir` flag are used to determine the artifact\u2019s download path.  When the artifact is named `..`, the resulting files within the artifact are extracted exactly 1 directory higher than the specified `--dir` flag value.\n\nIn `2.63.1`, `gh run download` will not download artifacts named `..` and `.` and instead exit with the following error message:\n\n```\nerror downloading ..: would result in path traversal\n```\n\n### Impact\n\nSuccessful exploitation heightens the risk of local path traversal attack vectors exactly 1 directory higher than intended.\n\n### Remediation and Mitigation\n\n1. Upgrade `gh` to `2.63.1`\n2. Implement additional validation to ensure artifact filenames do not contain potentially dangerous patterns, such as `..`, to prevent path traversal risks.",
  "id": "GHSA-2m9h-r57g-45pj",
  "modified": "2024-12-04T22:17:31Z",
  "published": "2024-12-04T15:32:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/cli/cli/security/advisories/GHSA-2m9h-r57g-45pj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-54132"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cli/cli/commit/1136764c369aaf0cae4ec2ee09dc35d871076932"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/cli/cli"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/U:Green",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Downloading malicious GitHub Actions workflow artifact results in path traversal vulnerability"
}


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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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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