CrowdSec•9mo ago

[appsec] - misleading error log

Hello, crowdsec version: 1.6.5~rc4 crowdsec-openresty-bouncer: 1.0.2 I found these entries in the crowdsec logs on one of our servers yesterday, which made me a bit worried that we were exposing any of the Crowdsec ports on our public ip's. But that was not the case.. after some digging i found out that if a connection is made towards our openresty whilst the api key is invalidated between the openresty-bouncer and lapi it will produce these logs below. What makes it a bit misleading from my point of view is that it shows the clients ip as (real ip).

time="2025-02-06T13:18:37+01:00" level=error msg="Unauthorized request from '127.0.0.1:39230' (real IP = 127.0.0.1)" name=appsec-waf type=appsec
time="2025-02-06T13:18:37+01:00" level=error msg="Unauthorized request from '127.0.0.1:39244' (real IP = 188.149.241.174)" name=appsec-waf type=appsec
time="2025-02-06T13:18:38+01:00" level=error msg="Unauthorized request from '127.0.0.1:39244' (real IP = 188.149.241.174)" name=appsec-waf type=appsec

time="2025-02-06T13:18:37+01:00" level=error msg="Unauthorized request from '127.0.0.1:39230' (real IP = 127.0.0.1)" name=appsec-waf type=appsec
time="2025-02-06T13:18:37+01:00" level=error msg="Unauthorized request from '127.0.0.1:39244' (real IP = 188.149.241.174)" name=appsec-waf type=appsec
time="2025-02-06T13:18:38+01:00" level=error msg="Unauthorized request from '127.0.0.1:39244' (real IP = 188.149.241.174)" name=appsec-waf type=appsec

` Now that i understand why, it kind of makes sense reading these logs, but at first they were pretty unclear.

3 Replies

CrowdSec•9mo ago

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iiamloz•9mo ago

I agree imo, the real IP doesnt really add any value to the actual message, it should really say Invalid api key or something

vedtotoOP•9mo ago

Yes fully agree 👍

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[appsec] - misleading error log

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