what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

FreeBSD Security Advisory 09:01 - LukemFTPd

FreeBSD Security Advisory 09:01 - LukemFTPd
Posted Jan 7, 2009
Site security.freebsd.org

FreeBSD Security Advisory - lukemftpd suffers from a cross site request forgery vulnerability.

tags | advisory, csrf
systems | freebsd
advisories | CVE-2008-4247
SHA-256 | f96a133098c7d695b8ed4948a168b5a4bbc1e31a29cf5e7e4ead2bbc59be475b

FreeBSD Security Advisory 09:01 - LukemFTPd

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=============================================================================
FreeBSD-SA-09:01.lukemftpd Security Advisory
The FreeBSD Project

Topic: Cross-site request forgery in lukemftpd(8)

Category: core
Module: lukemftpd
Announced: 2009-01-07
Credits: Maksymilian Arciemowicz
Affects: All supported versions of FreeBSD.
Corrected: 2009-01-07 20:17:55 UTC (RELENG_7, 7.1-STABLE)
2009-01-07 20:17:55 UTC (RELENG_7_1, 7.1-RELEASE-p1)
2009-01-07 20:17:55 UTC (RELENG_7_0, 7.0-RELEASE-p8)
2009-01-07 20:17:55 UTC (RELENG_6, 6.4-STABLE)
2009-01-07 20:17:55 UTC (RELENG_6_4, 6.4-RELEASE-p2)
2009-01-07 20:17:55 UTC (RELENG_6_3, 6.3-RELEASE-p8)
CVE Name: CVE-2008-4247

For general information regarding FreeBSD Security Advisories,
including descriptions of the fields above, security branches, and the
following sections, please visit <URL:http://security.FreeBSD.org/>.

I. Background

lukemftpd(8) is a general-purpose implementation of File Transfer Protocol
(FTP) server that is shipped with the FreeBSD base system. It is not enabled
in default installations but can be enabled as either an inetd(8) server,
or a standard-alone server.

A cross-site request forgery attack is a type of malicious exploit that is
mainly targeted to a web browser, by tricking a user trusted by the site
into visiting a specially crafted URL, which in turn executes a command
which performs some privileged operations on behalf of the trusted user
on the victim site.

II. Problem Description

The lukemftpd(8) server splits long commands into several requests. This
may result in the server executing a command which is hidden inside
another very long command.

III. Impact

This could, with a specifically crafted command, be used in a
cross-site request forgery attack.

FreeBSD systems running lukemftpd(8) server could act as a point of privilege
escalation in an attack against users using web browser to access trusted
FTP sites.

IV. Workaround

No workaround is available, but systems not running FTP servers are
not vulnerable. Systems not running the FreeBSD lukemftpd(8) server are not
affected, but users of other ftp daemons are advised to take care since
several other ftp daemons are known to have related bugs.

NOTE WELL: lukemftpd(8) is a different implementation of an FTP server
than ftpd(8).

V. Solution

Perform one of the following:

1) Upgrade your vulnerable system to 6-STABLE, or 7-STABLE, or to the
RELENG_7_1, RELENG_7_0, RELENG_6_4, or RELENG_6_3 security branch
dated after the correction date.

2) To patch your present system:

The following patches have been verified to apply to FreeBSD 6.3, 6.4,
7.0, and 7.1 systems.

a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.

# fetch http://security.FreeBSD.org/patches/SA-09:01/lukemftpd.patch
# fetch http://security.FreeBSD.org/patches/SA-09:01/lukemftpd.patch.asc

b) Execute the following commands as root:

# cd /usr/src
# patch < /path/to/patch
# cd /usr/src/libexec/lukemftpd
# make obj && make depend && make && make install

VI. Correction details

The following list contains the revision numbers of each file that was
corrected in FreeBSD.

CVS:

Branch Revision
Path
- -------------------------------------------------------------------------
RELENG_6
src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.5.2.2
src/contrib/lukemftpd/src/extern.h 1.1.1.4.2.2
src/contrib/lukemftpd/src/ftpd.c 1.4.2.2
RELENG_6_4
src/UPDATING 1.416.2.40.2.5
src/sys/conf/newvers.sh 1.69.2.18.2.8
src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.5.2.1.6.1
src/contrib/lukemftpd/src/extern.h 1.1.1.4.2.1.6.1
src/contrib/lukemftpd/src/ftpd.c 1.4.2.1.6.2
RELENG_6_3
src/UPDATING 1.416.2.37.2.13
src/sys/conf/newvers.sh 1.69.2.15.2.12
src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.5.2.1.4.1
src/contrib/lukemftpd/src/extern.h 1.1.1.4.2.1.4.1
src/contrib/lukemftpd/src/ftpd.c 1.4.2.1.4.1
RELENG_7
src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.6.2.1
src/contrib/lukemftpd/src/extern.h 1.1.1.5.2.1
src/contrib/lukemftpd/src/ftpd.c 1.5.2.1
RELENG_7_1
src/UPDATING 1.507.2.13.2.4
src/sys/conf/newvers.sh 1.72.2.9.2.5
src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.6.6.1
src/contrib/lukemftpd/src/extern.h 1.1.1.5.6.1
src/contrib/lukemftpd/src/ftpd.c 1.5.6.2
RELENG_7_0
src/UPDATING 1.507.2.3.2.12
src/sys/conf/newvers.sh 1.72.2.5.2.12
src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.6.4.1
src/contrib/lukemftpd/src/extern.h 1.1.1.5.4.1
src/contrib/lukemftpd/src/ftpd.c 1.5.4.1
- -------------------------------------------------------------------------

Subversion:

Branch/path Revision
- -------------------------------------------------------------------------
stable/6/ r186872
releng/6.4/ r186872
releng/6.3/ r186872
stable/7/ r186872
releng/7.1/ r186872
releng/7.0/ r186872
- -------------------------------------------------------------------------

VII. References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4247
http://security.freebsd.org/advisories/FreeBSD-SA-08:12.ftpd.asc

The latest revision of this advisory is available at
http://security.FreeBSD.org/advisories/FreeBSD-SA-09:01.lukemftpd.asc
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (FreeBSD)

iD8DBQFJZR5UFdaIBMps37IRApUJAKCEGZggeEjPC67j5Tmxl2fEDJ9sIQCfTAKn
vpOXC5jix3XiB7wxGKrvNJM=
=qPEc
-----END PGP SIGNATURE-----
Login or Register to add favorites

File Archive:

October 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Oct 1st
    10 Files
  • 2
    Oct 2nd
    0 Files
  • 3
    Oct 3rd
    0 Files
  • 4
    Oct 4th
    0 Files
  • 5
    Oct 5th
    0 Files
  • 6
    Oct 6th
    0 Files
  • 7
    Oct 7th
    0 Files
  • 8
    Oct 8th
    0 Files
  • 9
    Oct 9th
    0 Files
  • 10
    Oct 10th
    0 Files
  • 11
    Oct 11th
    0 Files
  • 12
    Oct 12th
    0 Files
  • 13
    Oct 13th
    0 Files
  • 14
    Oct 14th
    0 Files
  • 15
    Oct 15th
    0 Files
  • 16
    Oct 16th
    0 Files
  • 17
    Oct 17th
    0 Files
  • 18
    Oct 18th
    0 Files
  • 19
    Oct 19th
    0 Files
  • 20
    Oct 20th
    0 Files
  • 21
    Oct 21st
    0 Files
  • 22
    Oct 22nd
    0 Files
  • 23
    Oct 23rd
    0 Files
  • 24
    Oct 24th
    0 Files
  • 25
    Oct 25th
    0 Files
  • 26
    Oct 26th
    0 Files
  • 27
    Oct 27th
    0 Files
  • 28
    Oct 28th
    0 Files
  • 29
    Oct 29th
    0 Files
  • 30
    Oct 30th
    0 Files
  • 31
    Oct 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close