| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/cloudevents/sdk-go/v2 | < 2.15.2 | 2.15.2 |
| go sdk | ≤ 2.15.1 |
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):
<pre>if p.Client == nil { p.Client = **http.DefaultClient** } if p.roundTripper != nil { p.Client.**Transport = p.roundTripper** } </pre>When the transport is populated with an authenticated transport such as:
... 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
v.2.15.2
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