CVE-2024-53859 – github.com/cli/go-gh/v2

Package

Manager: go
Name: github.com/cli/go-gh/v2
Vulnerable Version: >=0 <2.11.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L

CVSS v4.0: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

EPSS: 0.00055 pctl0.17151

Details

`auth.TokenForHost` violates GitHub host security boundary when sourcing authentication token within a codespace ### Summary A security vulnerability has been identified in `go-gh` that could leak authentication tokens intended for GitHub hosts to non-GitHub hosts when within a codespace. ### Details `go-gh` sources authentication tokens from different environment variables depending on the host involved: - `GITHUB_TOKEN`, `GH_TOKEN` for GitHub.com and ghe.com - `GITHUB_ENTERPRISE_TOKEN`, `GH_ENTERPRISE_TOKEN` for GitHub Enterprise Server Prior to `2.11.1`, `auth.TokenForHost` could source a token from the `GITHUB_TOKEN` environment variable for a host other than GitHub.com or ghe.com when [within a codespace](https://github.com/cli/go-gh/blob/71770357e0cb12867d3e3e288854c0aa09d440b7/pkg/auth/auth.go#L73-L77). In `2.11.1`, `auth.TokenForHost` will only source a token from the `GITHUB_TOKEN` environment variable for GitHub.com or ghe.com hosts. ### Impact Successful exploitation could send authentication token to an unintended host. ### Remediation and mitigation 1. Upgrade `go-gh` to `2.11.1` 2. Advise extension users to regenerate authentication tokens: - [Personal access tokens](https://docs.github.com/en/enterprise-cloud@latest/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens) - [GitHub CLI OAuth app](https://docs.github.com/en/apps/using-github-apps/reviewing-and-revoking-authorization-of-github-apps#reviewing-your-authorized-github-apps) 3. Advise extension users to review their personal [security log](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/reviewing-your-security-log) and any relevant [audit logs](https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/identifying-audit-log-events-performed-by-an-access-token) for actions associated with their account or enterprise

Metadata

Created: 2024-11-27T21:43:03Z
Modified: 2024-12-12T19:17:34Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-55v3-xh23-96gh/GHSA-55v3-xh23-96gh.json
CWE IDs: ["CWE-200"]
Alternative ID: GHSA-55v3-xh23-96gh
Finding: F017
Auto approve: 1