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Bug 2003008 - firewalld fails to insert nf_nat_ftp module [rhel-9.0.0]
Summary: firewalld fails to insert nf_nat_ftp module [rhel-9.0.0]
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: firewalld
Version: unspecified
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Eric Garver
QA Contact: qe-baseos-daemons
URL:
Whiteboard:
: 2002783 (view as bug list)
Depends On: 1999102
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-09-10 09:56 UTC by RHEL Program Management Team
Modified: 2022-05-17 16:31 UTC (History)
7 users (show)

Fixed In Version: firewalld-1.0.0-4.el9
Doc Type: No Doc Update
Doc Text:
Clone Of: 1999102
Environment:
Last Closed: 2022-05-17 15:59:15 UTC
Type: ---
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-96765 0 None None None 2021-09-10 09:59:38 UTC
Red Hat Product Errata RHBA-2022:3993 0 None None None 2022-05-17 15:59:17 UTC

Comment 1 Eric Garver 2021-09-10 12:47:47 UTC 
*** Bug 2002783 has been marked as a duplicate of this bug. ***
Comment 2 Eric Garver 2021-09-10 12:55:16 UTC 
Upstream:

  13801962073f ("fix(firewalld): keep linux capability CAP_SYS_MODULE")
Comment 8 Jan Pazdziora (Red Hat) 2021-12-06 08:44:47 UTC 
Would it be possible to isolate loading the kernel modules to separate helper utility with separate capabilities, so that the daemon itself would not need them?
Comment 9 Eric Garver 2021-12-06 13:36:15 UTC 
(In reply to Jan Pazdziora from comment #8)
> Would it be possible to isolate loading the kernel modules to separate
> helper utility with separate capabilities, so that the daemon itself would
> not need them?

Probably possible. What is the intent?

Some of the module loading happens by firewalld itself (e.g. nf_nat_ftp). But invoking iptables-legacy (maybe this counts as a helper utility) also causes some modules to implicitly load. The change mentioned in comment 2 address both.
Comment 10 Jan Pazdziora (Red Hat) 2021-12-06 16:11:53 UTC 
The intent would be to separate the security domains of distinct types of operations and separate them through interfaces (albeit invoking script via sudo with certain parameters), with the goal of minimizing attack surface. A daemon loading modules itself could be tricked to load different module. It that operation is moved to a narrow-purpose utility that cannot do anything but load three or four modules whose names it checks, any potential future vulnerability in the daemon itself would have smaller impact.
Comment 13 errata-xmlrpc 2022-05-17 15:59:15 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (new packages: firewalld), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:3993
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