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Bug 133683 - /etc/services should be marked config(noreplace)
/etc/services should be marked config(noreplace)
Product: Fedora
Classification: Fedora
Component: setup (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Rik van Riel
David Lawrence
: EasyFix
Depends On: 171906
Blocks: FC3Target FC3BugWeekTracker
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Reported: 2004-09-26 04:35 EDT by Nicolas Mailhot
Modified: 2007-11-30 17:10 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2006-01-31 05:56:42 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Nicolas Mailhot 2004-09-26 04:35:55 EDT
Description of problem:

Right now when /etc/services is updated it will replace the old
version. This is a security problem since it may disable iptables the
next time it is launched if the firewall configuration uses ports the
user added manually to the local section.

Since iptables is not checked when services is updated the failure can
occur much later. People do not allways stay before the boot screen to
check no service failed (and since the system will usually behave the
same without iptables the problem might not be identified till the
system is rooted)
Comment 1 Rik van Riel 2004-09-27 12:30:22 EDT
Taking as part of bugweek.
Comment 2 Rik van Riel 2004-09-27 12:32:39 EDT
Fixed in setup-2.5.34-2
Comment 3 Owen Taylor 2004-09-27 12:35:42 EDT
Of course, this means that now if you edit /etc/services, packages
may not work correctly. Really need an /etc/services.d/ or something
to avoid people having to edit a file that needs to be automatically

Comment 4 Rik van Riel 2004-09-27 12:38:57 EDT
Agreed, in the long run we'll need something like you propose.
Comment 5 Josh Bressers 2004-12-07 15:54:29 EST
I'm removing the security severity of this issue.  This should no
longer be a security issue.
Comment 6 Nicolas Mailhot 2004-12-07 16:37:36 EST
Do you mean iptables no longuer silently stops at startup if one of
its rules uses a port that was undeclared by an /etc/services update ?

That's why the bug was declared security severity
Comment 7 Marius Andreiana 2005-08-20 02:27:57 EDT
Changing to ASSIGNED. Rick, can you confirm Nicolas question?

Nicolas, would you please file an enhancement request with Owen's proposal?
Comment 8 Nicolas Mailhot 2005-09-02 10:10:59 EDT
Will do
Comment 9 Phil Knirsch 2006-01-31 05:56:42 EST
As the new setup package now contains nearly the complete official IANA list i
think we can safely close this bug as RAWHIDE.

If there are any more services missing they are unofficial and need to be added
manually from a sysadmin now then anyway.

Read ya, Phil

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