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CVE-2022-24825— Smokescreen SSRF via deny list bypass

Quick assessment

Affected
stripe smokescreen
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Smokescreen是一个 HTTP CONNECT 代理。 Smokescreen存在安全漏洞，该漏洞源于可以通过在用户提供的 URL 末尾附加一个点或以不同的字母大小写提供输入来绕过拒绝列表功能。

CVSS 5.8 · Medium EPSS 0.92% · P57
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I. Basic Information for CVE-2022-24825

Vulnerability Information
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Vulnerability Title
Smokescreen SSRF via deny list bypass
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Smokescreen 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Smokescreen是一个 HTTP CONNECT 代理。 Smokescreen存在安全漏洞，该漏洞源于可以通过在用户提供的 URL 末尾附加一个点或以不同的字母大小写提供输入来绕过拒绝列表功能。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
stripe smokescreen < 0.0.3 -

II. Public POCs for CVE-2022-24825

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III. Intelligence Information for CVE-2022-24825

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Vendor Advisories for CVE-2022-24825 (1)

Other References for CVE-2022-24825 (1)

IV. Related Vulnerabilities

Same product: smokescreen
Same vendor: stripe
Same weakness: CWE-918

V. Comments for CVE-2022-24825

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