CVE-2022-29188

Medium

Description

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.

SeverityMedium
CVSS5.3
Exploit probability—
ProductStripe Smokescreen
PublishedMay 21, 2022
First seenMay 21, 2022

How to fix

Update
  • stripe smokescreen0.0.4 or later
  • github.com/stripe/smokescreen0.0.4 or later

Affected products

ProductAffected versionsFixed in
stripe smokescreenv < 0.0.40.0.4
github.com/stripe/smokescreenGov < 0.0.40.0.4

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