FreeBSD Errata Notice FreeBSD-EN-15:06.file
Nick Frampton
nick.frampton at akips.com
Wed Jun 10 01:00:37 UTC 2015
Pardon my ignorance, but why was this posted as an EN instead of a SA if it
corrects security vulnerabilities?
-Nick
On 10/06/15 08:39, FreeBSD Errata Notices wrote:
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> FreeBSD-EN-15:06.file Errata Notice
> The FreeBSD Project
>
> Topic: Version and security update of file(1) and libmagic(3)
>
> Category: contrib
> Module: file
> Announced: 2015-06-09
> Affects: All supported versions of FreeBSD.
> Corrected: 2015-01-23 18:48:59 UTC (stable/10, 10.1-STABLE)
> 2015-06-09 22:13:25 UTC (releng/10.1, 10.1-RELEASE-p11)
> 2015-01-23 18:50:36 UTC (stable/9, 9.3-STABLE)
> 2015-06-09 22:13:53 UTC (releng/9.3, 9.3-RELEASE-p15)
> 2015-05-09 23:53:25 UTC (stable/8, 8.4-STABLE)
> 2015-06-09 22:13:53 UTC (releng/8.4, 8.4-RELEASE-p29)
> CVE Name: CVE-2014-0207, CVE-2014-3478, CVE-2014-3479, CVE-2014-3480,
> CVE-2014-3487, CVE-2014-3538, CVE-2014-3587, CVE-2014-9620,
> CVE-2014-9621, CVE-2014-9653
>
> 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 file(1) utility attempts to classify file system objects based on
> filesystem, magic number and language tests.
>
> The libmagic(3) library provides most of the functionality of file(1)
> and may be used by other applications.
>
> II. Problem Description
>
> There are a number of denial of service issues when handling complex
> files, for instance Portable Executable (PE) files and ELF files parsing
> code with libmagic(3) and in turn file(1).
>
> III. Impact
>
> An attacker who can cause file(1) or any other applications using the
> libmagic(3) library to be run on a maliciously constructed input can
> cause the application to crash or consume excessive CPU resources,
> resulting in a denial-of-service.
>
> IV. Workaround
>
> System administrators who run file(1) and libmagic(3) against untrusted
> files, for instance when running with a mail server's mail scanner, are
> advised to configure the scanner in a way so that they do not call file(1)
> or libmagic(3) to conduct deep inspection of input files. Most of these
> scanners does not really need the in-depth analysis and the file type
> determined by libmagic is already sufficient.
>
> V. Solution
>
> This errata replaces the base system file(1) and libmagic(3) with the
> version 5.22.
>
> 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.
>
> [FreeBSD 10.1]
> # fetch https://security.FreeBSD.org/patches/EN-15:06/file-10.1.patch
> # fetch https://security.FreeBSD.org/patches/EN-15:06/file-10.1.patch.asc
> # gpg --verify file-10.1.patch.asc
>
> [FreeBSD 9.3]
> # fetch https://security.FreeBSD.org/patches/EN-15:06/file-9.3.patch
> # fetch https://security.FreeBSD.org/patches/EN-15:06/file-9.3.patch.asc
> # gpg --verify file-9.3.patch.asc
>
> [FreeBSD 8.4]
> # fetch https://security.FreeBSD.org/patches/EN-15:06/file-8.4.patch
> # fetch https://security.FreeBSD.org/patches/EN-15:06/file-8.4.patch.asc
> # gpg --verify file-8.4.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 all deamons using the library, or reboot the system.
>
> VI. Correction details
>
> The following list contains the correction revision numbers for each
> affected branch.
>
> Branch/path Revision
> - -------------------------------------------------------------------------
> stable/8/ r283135
> releng/8.4/ r284194
> stable/9/ r277593
> releng/9.3/ r284194
> stable/10/ r277592
> releng/10.1/ r284193
> - -------------------------------------------------------------------------
>
> 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:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0207>
>
> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3478>
>
> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3479>
>
> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3480>
>
> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3487>
>
> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3538>
>
> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3587>
>
> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9620>
>
> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9621>
>
> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9653>
>
> The latest revision of this Errata Notice is available at
> https://security.FreeBSD.org/advisories/FreeBSD-EN-15:06.file.asc
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