[FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-15:16.pw

17/09/15, [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-15:16.pw
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-15:16.pw
From: FreeBSD Errata Notices <errata-notices@freebsd.org>
Date: Wed, 16 Sep 2015 21:31:40 +0000 (UTC)
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

=============================================================================
FreeBSD-EN-15:16.pw                                             Errata Notice
                                                          The FreeBSD Project

Topic:          Regression in pw(8) when creating numeric users or groups

Category:       core
Module:         pw
Announced:      2015-09-16
Credits:        Thierry Caillet, Baptiste Daroussin
Affects:        10.2-RELEASE
Corrected:      2015-08-23 21:42:27 UTC (stable/10, 10.2-STABLE)
                2015-09-16 20:59:41 UTC (releng/10.2, 10.2-RELEASE-p3)

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 pw(8) utility is used to create, remove, modify, and display system
users and groups.

II.  Problem Description

The pw(8) utility will fail to create users and groups that only contain
numeric values [0-9].

III. Impact

An attempt to create a user or group containing only numeric values will
fail.

IV.  Workaround

No workaround is available, but systems configured to create users or groups
that do not contain numeric-only names 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-15:26/pw.patch
# fetch https://security.FreeBSD.org/patches/EN-15:26/pw.patch.asc
# gpg --verify pw.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>.

A reboot of the running system is not necessary after installing the updated
pw(8) utility.

VI.  Correction details

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

Branch/path                                                      Revision
- -------------------------------------------------------------------------
stable/10/                                                        r287084
releng/10.2/                                                      r287872
- -------------------------------------------------------------------------

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

<other info on vulnerability>

The latest revision of this Errata Notice is available at
https://security.FreeBSD.org/advisories/FreeBSD-EN-15:26.pw.asc

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