Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Add tainted nextcloud-logs.yaml parser to crowdsec.service #54

Merged
merged 4 commits into from
Sep 20, 2024
Merged

Add tainted nextcloud-logs.yaml parser to crowdsec.service #54

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
e88dd86
Add tainted nextcloud-logs.yaml parser to crowdsec.service
stephdl Sep 13, 2024
9b3d853
Update crowdsec.service to fix path for nextcloud-logs.yaml parser
stephdl Sep 19, 2024
f52e59e
Introduce reload action for tainted configuration file
stephdl Sep 19, 2024
7a2d034
Introduce expand-configuration script and add tainted nextcloud-logs.…
stephdl Sep 19, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions imageroot/crowdsec.service
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@ ExecStart=/usr/bin/podman run \
--volume ./crowdsec_config:/etc/crowdsec:Z \
--volume %N-data:/var/lib/crowdsec/data:Z \
--volume ${CROWDSEC_JOURNAL}:/run/log/journal \
--volume ./tainted/nextcloud-logs.yaml:/etc/crowdsec/hub/parsers/s01-parse/crowdsecurity/nextcloud-logs.yaml:Z \
Copy link
Member

@DavidePrincipi DavidePrincipi Sep 18, 2024 •
edited
Loading

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

In 10initialize, the Nextcloud collection (and the included parser) is installed after the tainted parser YAML file is mounted as a Podman volume. Is this safe for both new installs and updates?

Copy link
Collaborator Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

for upgrades yes no issue

for first install I missed it, we need to reload the configuration at the end, it is the easiest way

${CROWDSEC_IMAGE}
ExecStop=/usr/bin/podman stop --ignore --cidfile %t/%N.cid -t 10
ExecStopPost=/usr/bin/podman rm --ignore -f --cidfile %t/%N.cid
Expand Down
41 changes: 41 additions & 0 deletions imageroot/state/tainted/nextcloud-logs.yaml
View file
Open in desktop
stephdl marked this conversation as resolved.
Show resolved Hide resolved
Original file line number Diff line number Diff line change
@@ -0,0 +1,41 @@
---
onsuccess: next_stage
filter: "Upper(evt.Parsed.program) == 'NEXTCLOUD-APP'"
name: crowdsecurity/nextcloud-logs
description: "Parse nextcloud logs"
pattern_syntax:
NEXTCLOUD_USER: '[a-zA-Z0-9\.\@\-\+_%]+'
nodes:
- grok:
pattern: 'Login failed: %{NEXTCLOUD_USER:target_user} \(Remote IP: %{IP:source_ip}\)'
apply_on: message
statics:
- meta: target_user
expression: "evt.Parsed.target_user"
- meta: log_type
value: nextcloud_failed_auth
- grok:
pattern: 'Bruteforce attempt from \\?"%{IP:source_ip}\\?" detected for action \\?"%{DATA:action}\\?"'
apply_on: message
statics:
- meta: action
expression: "evt.Parsed.action"
- meta: log_type
value: nextcloud_bruteforce_attempt

#{"reqId":"dCA39mNG3NHLwbibVCFp","level":1,"time":"2023-02-14T17:28:33+00:00","remoteAddr":"172.18.0.200","user":"--","app":"core","method":"GET","url":"/","message":"Trusted domain error. \"172.18.0.200\" tried to access using \"kloot.ronsmans.eu\" as host.","userAgent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/109.0","version":"25.0.3.2","data":{"app":"core"}}

- grok:
pattern: 'Trusted domain error. \\"%{IP:source_ip}\\".*'
apply_on: message
statics:
- meta: log_type
value: nextcloud_domain_error

statics:
- meta: service
value: nextcloud
- meta: source_ip
expression: "evt.Parsed.source_ip"
- target: evt.StrTime
expression: "evt.Parsed.time_local"
Loading