C
CrowdSec•2mo ago
Steve Jobless

DELETE requests not allowed

I'm currently running crowdsec with the appsec component in a docker container together with the Traefik bouncer to protect my proxy. However I ran into a problem where crowdsec blocks requests that use the DELETE HTTP method. Unfortunately one of my apps makes use of DELETE so how do I go about disabling this rule? I would like to do so unsing my docker-config file and a separate yaml config if possible. Here's a snippet of one of the alerts:
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2 Replies
CrowdSec
CrowdSec•2mo ago
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Loz
Loz•2mo ago
At the moment you would have to create a pre_eval hook to disable the native rule number https://docs.crowdsec.net/docs/next/appsec/rules_examples#4-disable-rules-by-id full example: 
#/etc/crowdsec/appsec-configs/method_allowed.yaml
name: custom/method_allowed
pre_eval:
  - filter: IsInBand && req.Method in ["PUT", "DELETE"] # && req.Host == "zammnd.example.com" # add "PATCH" if you need it
    apply:
      - RemoveInBandRuleByID(911100)
#/etc/crowdsec/appsec-configs/method_allowed.yaml
name: custom/method_allowed
pre_eval:
  - filter: IsInBand && req.Method in ["PUT", "DELETE"] # && req.Host == "zammnd.example.com" # add "PATCH" if you need it
    apply:
      - RemoveInBandRuleByID(911100)
remove the # infront of req.Host if you want to limit the "scope" of the removing the rule to a specific host where this rule is triggering then you add it to your appsec configuration: 
appsec_configs:
  - crowdsecurity/appsec-default    # in-band virtual patching
  - crowdsecurity/crs-inband        # in-band CRS detection
  - custom/method_allowed           # relax CRS method rule for chosen methods
labels:
  type: appsec
listen_addr: 127.0.0.1:7422
source: appsec
appsec_configs:
  - crowdsecurity/appsec-default    # in-band virtual patching
  - crowdsecurity/crs-inband        # in-band CRS detection
  - custom/method_allowed           # relax CRS method rule for chosen methods
labels:
  type: appsec
listen_addr: 127.0.0.1:7422
source: appsec

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