It was even stranger this morning. I reverted my snapshot, installed
the custom Snap, and was able to browse to HTTPS sites successfully.
After I closed the browser, generated a Kerberos TGT, and started the
browser again, all certificates (internal and external) were once again
untrusted. Destroying the Kerberos TGT did not help validate HTTPS
sites.
>I assume you did do the pre-requisite steps, i.e. connecting the interface
The "interface" in this context is the same as the "plug" ('snap connect
firefox:kerberos-tickets'), correct? I wasn't able to get that far as my first
goal was to reproduce authentication failure on a Kerberos-only site, but I've
been unable to consistently validate an HTTPS connection with the
manually-installed snap. Enabling the 'firefox:kerberos-tickets' interface did
not appear to help the HTTPS validation issue.
>and putting the server in trusted-uris.
We use policies in order to configure the Kerberos trusted URIs. Ex:
"policies": {
"Authentication": {
"Delegated": [
"example.com"
],
"Locked": false,
"NTLM": [
"example.com"
],
"SPNEGO": [
"example.com"
]
},
}
Looking in the custom Snap Firefox's 'about:policies' and 'about:config'
shows that these URIs are consistent, though I've also heard that non-
ESR Firefox does not apply the policies file... though what I'm seeing
in the GUI suggests that the policies are being applied.
I don't believe bug #1901586 is the issue. Yes, we install our internal
Root CAs under '/usr/local/share/ca-certificates/', but we also run
'update-ca-certificates' after installing our internal Root CAs.
Furthermore, the issue is trusting *any* certificate, not just our
internal Root CAs.
So there are three potential avenues for errors:
1. I'm not installing/configuring the .snap package properly
2. Something changed in the newer version of Firefox
3. Something changed as a result of using Firefox Nightly instead of Firefox
ESR
I'm not particularly familiar with Snap, so #1 is quite possible. I
could try a run on Ubuntu 25.10 when able.
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https://bugs.launchpad.net/bugs/1849346
Title:
[SRU] kerberos GSSAPI no longer works after deb->snap transition
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