Server-Side Request Forgery in gogs webhook

Impact

The malicious user is able to discover services in the internal network through webhook functionality. All installations accepting public traffic are affected.

Patches

Webhook payload URLs are revalidated before each delivery to make sure they are not resolved to blocked local network addresses. Users should upgrade to 0.12.8 or the latest 0.13.0+dev.

Workarounds

Run Gogs in its own private network.

References

https://huntr.dev/bounties/da1fbd6e-7a02-458e-9c2e-6d226c47046d/

For more information

If you have any questions or comments about this advisory, please post on https://github.com/gogs/gogs/issues/6901.