FreeBSD Errata Notice FreeBSD-EN-19:17.ipfw
20 August, 2019 by firstname.lastname@example.org | freebsd
-----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----- iQKTBAEBCgB9FiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAl1cPf5fFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEZD MEU4NzhBRTVBRkU3ODgwMjhENjM1NUQzOTc5MkY0OUVBN0U1QzIACgkQ05eS9J6n 5cIDTg//ca9BaMVV04yzSaIqgcuxCs5nM6eQMJehRKWP+Ibt6bUUnUYlS8V1HOBD eUS0eW9GiO2QkrVmttxrC2IwJSutVzUXMP/zkLEyb91LJ13+YkuLKSaj14pucA+S VNy1CH8Sry/PnA+bcFQxgpTAl8EGaTAzT0znRgdvooe26JbHw0y8941t88Mr3giN vCPnfAdaT0MjKSdKgykA+xKKgY1+fwA1vUFOYybNzg+eN10gU2qRQfksFc4VpnNd 7J3j5I2n/1Y1KxsbEagGXK0JOztZa1PhqsAYuj4iAMhM8Nw+vdAtVX8DYyqHEe2m hjJyGPu1Lrihrx2PUH5GVv0KXHbLVRnZ/N7Xs3hPsUZWBuSrcU2r3cdqe1nB055D PQMr6m+Ydr0DXnySShd5Kow26IBDVJQ+YrGkK88CdMT2YGnarqcg/RaT/eIoJ654 lKvl5XeOL/P9apU567HzYoAUVlvxMAD2pEd2+NGr9gi3bXfAg2Usjeekwo7BRRMo Ddmec7Ql/wBU0RED67l+TYIM2IDNj5ofua6WrSrs8QCIeNXnYi8kBLTBwKBiz5Fw scisoACv92zexrIpac1RoAT/+OdWUgwtCx7axyLybbEsAC2FDfSDVqlJfq0m+DFY /R3Bezk1Ek+U4KUpQr6I1DSBU+1Uo8DljfwkwH8DVn+aWy3194Q= =8VPw -----END PGP SIGNATURE----- _______________________________________________ email@example.com mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-announce To unsubscribe, send any mail to "firstname.lastname@example.org"