cli go-gh up to 2.11.0 Environment Variable information disclosure

Summaryinfo

A vulnerability was found in cli go-gh up to 2.11.0 and classified as problematic. Affected by this issue is some unknown functionality of the component Environment Variable Handler. Executing a manipulation can lead to information disclosure. This vulnerability is handled as CVE-2024-53859. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in cli go-gh up to 2.11.0 and classified as problematic. This vulnerability affects an unknown code of the component Environment Variable Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

go-gh is a Go module for interacting with the `gh` utility and the GitHub API from the command line. 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. `go-gh` sources authentication tokens from different environment variables depending on the host involved: 1. `GITHUB_TOKEN`, `GH_TOKEN` for GitHub.com and ghe.com and 2. `GITHUB_ENTERPRISE_TOKEN`, `GH_ENTERPRISE_TOKEN` for GitHub Enterprise Server. Prior to version `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. In version `2.11.1`, `auth.TokenForHost` will only source a token from the `GITHUB_TOKEN` environment variable for GitHub.com or ghe.com hosts. Successful exploitation could send authentication token to an unintended host. This issue has been addressed in version 2.11.1 and all users are advised to upgrade. Users are also advised to regenerate authentication tokens and to review their personal security log and any relevant audit logs for actions associated with their account or enterprise.

The advisory is shared for download at github.com. This vulnerability was named CVE-2024-53859 since 11/22/2024. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 232167 (Linux Distros Unpatched Vulnerability : CVE-2024-53859), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.11.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (232167). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• cli

Name

• go-gh

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11.0

Website

• Product: https://github.com/cli/go-gh/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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