Smokescreen SSRF via deny list bypass

中 5.3CVE-2022-24825 · GHSA-gcj7-j438-hjj2 · GO-2022-0429 · 19/04/2022 公開 · 17/06/2026 更新

要点

CVE-2022-24825 は github.com/stripe/smokescreen, smokescreen (stripe) に影響する深刻度「中」 (CVSS 5.3) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.93%（全脆弱性の 60.7% より高い）。
対処：0.0.3 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/stripe/smokescreen Go	`< 0.0.3`	`0.0.3`
smokescreen stripe	`< 0.0.3`	`0.0.3`

概要

The primary use case for Smokescreen is to prevent server-side request forgery (SSRF) attacks in which external attackers leverage the behavior of applications to connect to or scan internal infrastructure.

Smokescreen also offers an option to deny access to additional (e.g., external) URLs by way of a deny list. There was an issue in Smokescreen that made it possible to bypass the deny list feature by appending a dot to the end of user-supplied URLs, or by providing input in a different letter case.

Recommendation

Upgrade Smokescreen to version 0.0.3 or later.

Acknowledgements

Thanks to Grzegorz Niedziela for reporting the issue.

For more information

Email us at [email protected]

NVD の説明

Smokescreen is a simple HTTP proxy that fogs over naughty URLs. The primary use case for Smokescreen is to prevent server-side request forgery (SSRF) attacks in which external attackers leverage the behavior of applications to connect to or scan internal infrastructure. Smokescreen also offers an option to deny access to additional (e.g., external) URLs by way of a deny list. There was an issue in Smokescreen that made it possible to bypass the deny list feature by appending a dot to the end of user-supplied URLs, or by providing input in a different letter case. Recommended to upgrade Smokescreen to version 0.0.3 or later.