[FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-15:12.netstat

19/08/15, [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-15:12.netstat
From: FreeBSD Errata Notices <errata-notices@freebsd.org>

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To: FreeBSD Errata Notices <errata-notices@freebsd.org>
Subject: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-15:12.netstat
From: FreeBSD Errata Notices <errata-notices@freebsd.org>
Date: Tue, 18 Aug 2015 20:15:41 +0000 (UTC)
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Hash: SHA512

=============================================================================
FreeBSD-EN-15:12.netstat                                        Errata Notice
                                                          The FreeBSD Project

Topic:          Incorrect netstat(1) data handling on 32-bit systems

Category:       core
Module:         netstat
Announced:      2015-08-18
Credits:        Mark Johnston
Affects:        FreeBSD 10.2-RELEASE
Corrected:      2015-07-31 00:21:41 UTC (stable/10, 10.2-STABLE)
                2015-08-18 19:30:17 UTC (releng/10.2, 10.2-RC3-p1)
                2015-08-18 19:30:17 UTC (releng/10.2, 10.2-RELEASE-p1)

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 netstat(1) utility displays the contents of various network related data
structures.

II.  Problem Description

The netstat(1) utility incorrectly handles reported values on 32-bit systems.

III. Impact

Due to how netstat(1) processes IPSEC counters, the utility may produce
incorrect output on 32-bit systems.

IV.  Workaround

No workaround is available, however systems without IPSEC compiled into the
kernel are not affected.

V.   Solution

Perform one of the following:

1) Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date.

2) To update your present 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

3) To update your present 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-15:12/netstat.patch
# fetch https://security.FreeBSD.org/patches/EN-15:12/netstat.patch.asc
# gpg --verify netstat.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>.

VI.  Correction details

The following list contains the correction revision numbers for each
affected branch.

Branch/path                                                      Revision
- -------------------------------------------------------------------------
stable/10/                                                        r286099
releng/10.2/                                                      r286901
- -------------------------------------------------------------------------

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

<URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201700>

The latest revision of this Errata Notice is available at
https://security.FreeBSD.org/advisories/FreeBSD-EN-15:12.netstat.asc

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