ghinstallation returns app JWT in error responses

中 4.7CVE-2022-39304 · GHSA-h4q8-96p6-jcgr · GO-2022-1178 · 20/12/2022 公開 · 17/06/2026 更新

要点

CVE-2022-39304 は github.com/bradleyfalzon/ghinstallation, ghinstallation (ghinstallation project) に影響する深刻度「中」 (CVSS 4.7) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.39%（全脆弱性の 33.7% より高い）。
対処：1.1.2-0.20210308182858-d24f14f8be70, 2.0.0 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
github.com/bradleyfalzon/ghinstallation Go	`< 1.1.2-0.20210308182858-d24f14f8be70< 2.0.0`	`1.1.2-0.20210308182858-d24f14f8be702.0.0`
ghinstallation ghinstallation_project	`< 2.0.0`	`2.0.0`

概要

Impact

In ghinstallation v1, when the request to refresh an installation token failed, the HTTP request and response would be returned for debugging.

https://github.com/bradleyfalzon/ghinstallation/blob/24e56b3fb7669f209134a01eff731d7e2ef72a5c/transport.go#L172-L174

The request contained the bearer JWT for the App, and was returned back to clients. This token is short lived (10 minute maximum).

Patches

This has already been patched in d24f14f8be70d94129d76026e8b0f4f9170c8c3e, and is available in releases >= v2.0.0.

References

Are there any links users can visit to find out more?

See https://docs.github.com/en/developers/apps/building-github-apps/authenticating-with-github-apps#authenticating-as-an-installation for the App installation flow.

For more information

If you have any questions or comments about this advisory:

Open an issue in ghinstallation

NVD の説明

ghinstallation provides transport, which implements http.RoundTripper to provide authentication as an installation for GitHub Apps. In ghinstallation version 1, when the request to refresh an installation token failed, the HTTP request and response would be returned for debugging. The request contained the bearer JWT for the App, and was returned back to clients. This token is short lived (10 minute maximum). This issue has been patched and is available in version 2.0.0.