nanog mailing list archives

Shrubbery's tac_plus - inclusion in other products?


From: Royce Williams via NANOG <nanog () lists nanog org>
Date: Wed, 23 Sep 2026 14:00:14 -0800

Do any TACACS+-speaking solutions (current or legacy) have a basis on
the Shrubbery fork of tac_plus?

There's an unauth'd RCE in just about all versions (no CVE yet):

https://github.com/elttam/publications/blob/master/writeups/elttam-tac_plus_rce_fmtstring_advisory.txt

Some threat-intel folks are collecting what we know here (disclosure:
my post, but it's volunteer), so if anyone replies (here or on the
side), I'll update here:

https://ifin.network/t/cve-pending-pre-auth-format-string-bug-in-tac-plus-shrubbery-networks/859/1

I'm interested in legacy / EOL platform info as well -- like some are
still in the field. And upstream updates are sporadic (until this year
when .31 was released, there hadn't been a release since .28 in 2015),
so embedding could go way back.

I don't have vendor access anymore, so any feedback / corrections appreciated.

--
Royce Williams
Tech Solvency
_______________________________________________
NANOG mailing list 
https://lists.nanog.org/archives/list/nanog () lists nanog org/message/AY32ZYSY7ZRWSHNWZF74TNNHVZNYOY5I/


Current thread: