GHSA-2m9h-r57g-45pj

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Source
https://github.com/advisories/GHSA-2m9h-r57g-45pj
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/12/GHSA-2m9h-r57g-45pj/GHSA-2m9h-r57g-45pj.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-2m9h-r57g-45pj
Aliases
Published
2024-12-04T15:32:45Z
Modified
2024-12-04T22:17:31Z
Severity
  • 6.3 (Medium) CVSS_V4 - 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 CVSS Calculator
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.
Database specific
{
    "nvd_published_at": "2024-12-04T16:15:26Z",
    "cwe_ids": [
        "CWE-22"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2024-12-04T15:32:45Z"
}
References

Affected packages

Go / github.com/cli/cli/v2

Package

Name
github.com/cli/cli/v2
View open source insights on deps.dev
Purl
pkg:golang/github.com/cli/cli/v2

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.63.1

Go / github.com/cli/cli

Package

Name
github.com/cli/cli
View open source insights on deps.dev
Purl
pkg:golang/github.com/cli/cli

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
1.14.0