Smokescreen SSRF via deny list bypass (square brackets)

TRUNG BÌNH 6.5CVE-2022-29188 · GHSA-qwrf-gfpj-qvj6 · GO-2022-0459 · Công bố 21/05/2022 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2022-29188 là lỗ hổng mức TRUNG BÌNH (CVSS 6.5) ảnh hưởng github.com/stripe/smokescreen, smokescreen (stripe).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.87%, cao hơn 58.9% các lỗ hổng khác.
Cách xử lý: cập nhật lên 0.0.4 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
github.com/stripe/smokescreen Go	`< 0.0.4`	`0.0.4`
smokescreen stripe	`< 0.0.4`	`0.0.4`

Mô tả

Impact

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 surrounding the hostname with square brackets (e.g. [example.com]).

Recommendation

Upgrade Smokescreen to version 0.0.4 or later.

Acknowledgements

Thanks to Axel Chong for reporting the issue.

For more information

Email us at [email protected]

Mô tả của NVD

Smokescreen is an HTTP proxy. 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 surrounding the hostname with square brackets (e.g. `[example.com]`). This only impacted the HTTP proxy functionality of Smokescreen. HTTPS requests were not impacted. Smokescreen version 0.0.4 contains a patch for this issue.