CVE

CVE-2024-32980

Date: (C)2024-05-08   (M)2024-05-15

Spin is the developer tool for building and running serverless applications powered by WebAssembly. Prior to 2.4.3, some specifically configured Spin applications that use `self` requests without a specified URL authority can be induced to make requests to arbitrary hosts via the `Host` HTTP header. The following conditions need to be met for an application to be vulnerable: 1. The environment Spin is deployed in routes requests to the Spin runtime based on the request URL instead of the `Host` header, and leaves the `Host` header set to its original value; 2. The Spin application's component handling the incoming request is configured with an `allow_outbound_hosts` list containing `"self"`; and 3. In reaction to an incoming request, the component makes an outbound request whose URL doesn't include the hostname/port. Spin 2.4.3 has been released to fix this issue.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:		CVSS V2 Severity:
CVSS Score : 9.1		CVSS Score :
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Scope:		Integrity:
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Reference:

https://github.com/fermyon/spin/commit/b3db535c9edb72278d4db3a201f0ed214e561354

https://github.com/fermyon/spin/security/advisories/GHSA-f3h7-gpjj-wcvh