Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS01cGY2LTJxd3gtcHhtMs4AA5zw

Go SDK for CloudEvents's use of WithRoundTripper to create a Client leaks credentials

Impact

What kind of vulnerability is it? Who is impacted?
Using cloudevents.WithRoundTripper to create a cloudevents.Client with an authenticated http.RoundTripper causes the go-sdk to leak credentials to arbitrary endpoints.

The relevant code is here (also inline, emphasis added):

When the transport is populated with an authenticated transport such as:

• oauth2.Transport
• idtoken.NewClient(...).Transport

... then http.DefaultClient is modified with the authenticated transport and will start to send Authorization tokens to
any endpoint it is used to contact!

Found and patched by: @tcnghia and @mattmoor

Patches

v.2.15.2

Permalink: https://github.com/advisories/GHSA-5pf6-2qwx-pxm2
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS01cGY2LTJxd3gtcHhtMs4AA5zw
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 2 months ago
Updated: about 2 months ago

Identifiers: GHSA-5pf6-2qwx-pxm2, CVE-2024-28110
References:

• https://github.com/cloudevents/sdk-go/security/advisories/GHSA-5pf6-2qwx-pxm2
• https://github.com/cloudevents/sdk-go/commit/de2f28370b0d2a0f64f92c0c6139fa4b8a7c3851
• https://github.com/cloudevents/sdk-go/blob/67e389964131d55d65cd14b4eb32d57a47312695/v2/protocol/http/protocol.go#L104-L110
• https://github.com/advisories/GHSA-5pf6-2qwx-pxm2

Repository: https://github.com/cloudevents/sdk-go
Blast Radius: 0.0

Affected Packages