Security Advisories
[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]
Subject: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:17.ipfw
From: FreeBSD Errata Notices <This email address is being protected from spambots. You need JavaScript enabled to view it.>
Date: Tue, 20 Aug 2019 20:12:37 +0000 (UTC)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
=============================================================================
FreeBSD-EN-19:17.ipfw Errata Notice
The FreeBSD Project
Topic: ipfw(8) jail keyword broken prior to jail startup
Category: core
Module: ipfw
Announced: 2019-08-20
Affects: FreeBSD 11.3
Corrected: 2019-08-15 17:40:48 UTC (stable/12, 12.0-STABLE)
2019-08-15 17:40:48 UTC (stable/11, 11.3-STABLE)
2019-08-20 17:46:40 UTC (releng/11.3, 11.3-RELEASE-p3)
Note that this issue was introduced after the FreeBSD 11.2 and 12.0 releases.
FreeBSD 11.3 is the only affected release.
For general information regarding FreeBSD Errata Notices and Security
Advisories, including descriptions of the fields above, security
branches, and the following sections, please visit
<URL:https://security.FreeBSD.org/>.
I. Background
The ipfw(8) utility configures rules for the ipfw(4) firewall. The jail
keyword applies the rule for packets pertaining to the given jail, named by
the argument.
II. Problem Description
The jail argument no longer allowed jids to be specified before a jail was
created. Attempts to use the jail keyword in this scenario would result in
"jail <jid> not found" errors, when previously these rules would apply to
any jail with the given jid that was subsequently started.
III. Impact
The ipfw(4) firewall will reject rules that attempt to use the jail
keyword prior to jail startup, and these rules will not be applied.
IV. Workaround
The system administrator can apply jail-based firewall rules after jail
creation.
Systems that do not use ipfw(4) are not affected.
V. Solution
Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date.
Perform one of the following:
1) To update your system via a binary patch:
Systems running a RELEASE version of FreeBSD on the i386 or amd64
platforms can be updated via the freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
2) To update your system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
# fetch https://security.FreeBSD.org/patches/EN-19:17/ipfw.patch
# fetch https://security.FreeBSD.org/patches/EN-19:17/ipfw.patch.asc
# gpg --verify ipfw.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile the operating system using buildworld and installworld as
described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.
Restart jails to apply firewall rules, if required.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r351094
stable/11/ r351094
releng/11.3/ r351258
- -------------------------------------------------------------------------
To see which files were modified by a particular revision, run the
following command, replacing NNNNNN with the revision number, on a
machine with Subversion installed:
# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
Or visit the following URL, replacing NNNNNN with the revision number:
<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
VII. References
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-19:17.ipfw.asc>
-----BEGIN PGP SIGNATURE-----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=8VPw
-----END PGP SIGNATURE-----
_______________________________________________
This email address is being protected from spambots. You need JavaScript enabled to view it. mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-announce
To unsubscribe, send any mail to "This email address is being protected from spambots. You need JavaScript enabled to view it."
| Powered by: | MHonArc  |
