OctoPrint versions up until and including 1.10.0 contain a vulnerability that allows an unauthenticated attacker to completely bypass the authentication if the autologinLocal
option is enabled within config.yaml
, even if they come from networks that are not configured as localNetworks
, by spoofing their IP via the X-Forwarded-For
header.
If autologin is not enabled, this vulnerability does not have any impact.
The vulnerability has been patched in version 1.10.1.
Until the patch has been applied, OctoPrint administrators who have autologin enabled on their instances should disable it and/or to make the instance inaccessible from potentially hostile networks like the internet.
autologinAs
configuration within the accessControl
section in the OctoPrint yaml configuration fileX-Forwarded-For: 127.0.0.1
header to HTTP requests. For example, this can be done using proxy software like Burp Suite. Alternatively, there are browser extensions such as https://github.com/MisterPhilip/x-forwarded-for, but I haven't tried them.This vulnerability was discovered and responsibly disclosed to OctoPrint by Jacopo Tediosi.
{ "nvd_published_at": "2024-05-14T16:17:12Z", "cwe_ids": [ "CWE-290" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2024-05-14T20:13:47Z" }