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GHSA-5pf6-2qwx-pxm2
No affected components available
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):
<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
Patches
v.2.15.2
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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