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Liebe Kolleginnen und Kollegen,
soeben erreichte uns nachfolgendes RedHat Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.
CVE-2011-0762 – Schwachstelle in vsftpd
In der Funktion vsf_filename_passes_filter() in der Datei ls.c existiert
eine Schwachstelle beim Verarbeiten von Mustern bei Dateinamen. Ein
entfernter Angreifer, der Zugriff auf den FTP-Server hat, kann mittels
eines praeparierten STAT-Befehls grosse Mengen von CPU-Zeit konsumieren,
was zu einem Denial of Service auf den FTP-Dienst benutzt werden kann.
Hinweis: Ein Exploit fuer die Schwachstelle ist verfuegbar.
Betroffen sind die folgenden Software Pakete und Plattformen:
Paket vsftpd
RHEL Desktop Workstation (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux (v. 5 server) – i386, ia64, ppc, s390x,
x86_64
Red Hat Enterprise Linux AS version 4 – i386, ia64, ppc, s390, s390x,
x86_64
Red Hat Enterprise Linux ES version 4 – i386, ia64, x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, x86_64
Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.
(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.
Mit freundlichen Gruessen,
Timo Schulz
– —
Timo Schulz, M.Sc. (Incident Response Team)
DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-590
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrasse 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski
Automatische Warnmeldungen: https://www.cert.dfn.de/autowarn
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: vsftpd security update
Advisory ID: RHSA-2011:0337-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0337.html
Issue date: 2011-03-09
CVE Names: CVE-2011-0762
=====================================================================
1. Summary:
An updated vsftpd package that fixes one security issue is now available
for Red Hat Enterprise Linux 4, 5, and 6.
The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.
2. Relevant releases/architectures:
RHEL Desktop Workstation (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux (v. 5 server) – i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux AS version 4 – i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux ES version 4 – i386, ia64, x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, x86_64
3. Description:
vsftpd (Very Secure File Transfer Protocol (FTP) daemon) is a secure FTP
server for Linux, UNIX, and similar operating systems.
A flaw was discovered in the way vsftpd processed file name patterns. An
FTP user could use this flaw to cause the vsftpd process to use an
excessive amount of CPU time, when processing a request with a
specially-crafted file name pattern. (CVE-2011-0762)
All vsftpd users should upgrade to this updated package, which contains a
backported patch to correct this issue. The vsftpd daemon must be restarted
for this update to take effect.
4. Solution:
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
5. Bugs fixed (http://bugzilla.redhat.com/):
681667 – CVE-2011-0762 vsftpd: remote DoS via crafted glob pattern
6. Package List:
Red Hat Enterprise Linux AS version 4:
Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/vsftpd-2.0.1-9.el4.src.rpm
i386:
vsftpd-2.0.1-9.el4.i386.rpm
vsftpd-debuginfo-2.0.1-9.el4.i386.rpm
ia64:
vsftpd-2.0.1-9.el4.ia64.rpm
vsftpd-debuginfo-2.0.1-9.el4.ia64.rpm
ppc:
vsftpd-2.0.1-9.el4.ppc.rpm
vsftpd-debuginfo-2.0.1-9.el4.ppc.rpm
s390:
vsftpd-2.0.1-9.el4.s390.rpm
vsftpd-debuginfo-2.0.1-9.el4.s390.rpm
s390x:
vsftpd-2.0.1-9.el4.s390x.rpm
vsftpd-debuginfo-2.0.1-9.el4.s390x.rpm
x86_64:
vsftpd-2.0.1-9.el4.x86_64.rpm
vsftpd-debuginfo-2.0.1-9.el4.x86_64.rpm
Red Hat Enterprise Linux ES version 4:
Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/vsftpd-2.0.1-9.el4.src.rpm
i386:
vsftpd-2.0.1-9.el4.i386.rpm
vsftpd-debuginfo-2.0.1-9.el4.i386.rpm
ia64:
vsftpd-2.0.1-9.el4.ia64.rpm
vsftpd-debuginfo-2.0.1-9.el4.ia64.rpm
x86_64:
vsftpd-2.0.1-9.el4.x86_64.rpm
vsftpd-debuginfo-2.0.1-9.el4.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/vsftpd-2.0.5-16.el5_6.1.src.rpm
i386:
vsftpd-2.0.5-16.el5_6.1.i386.rpm
vsftpd-debuginfo-2.0.5-16.el5_6.1.i386.rpm
x86_64:
vsftpd-2.0.5-16.el5_6.1.x86_64.rpm
vsftpd-debuginfo-2.0.5-16.el5_6.1.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/vsftpd-2.0.5-16.el5_6.1.src.rpm
i386:
vsftpd-2.0.5-16.el5_6.1.i386.rpm
vsftpd-debuginfo-2.0.5-16.el5_6.1.i386.rpm
ia64:
vsftpd-2.0.5-16.el5_6.1.ia64.rpm
vsftpd-debuginfo-2.0.5-16.el5_6.1.ia64.rpm
ppc:
vsftpd-2.0.5-16.el5_6.1.ppc.rpm
vsftpd-debuginfo-2.0.5-16.el5_6.1.ppc.rpm
s390x:
vsftpd-2.0.5-16.el5_6.1.s390x.rpm
vsftpd-debuginfo-2.0.5-16.el5_6.1.s390x.rpm
x86_64:
vsftpd-2.0.5-16.el5_6.1.x86_64.rpm
vsftpd-debuginfo-2.0.5-16.el5_6.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/vsftpd-2.2.2-6.el6_0.1.src.rpm
i386:
vsftpd-2.2.2-6.el6_0.1.i686.rpm
vsftpd-debuginfo-2.2.2-6.el6_0.1.i686.rpm
ppc64:
vsftpd-2.2.2-6.el6_0.1.ppc64.rpm
vsftpd-debuginfo-2.2.2-6.el6_0.1.ppc64.rpm
s390x:
vsftpd-2.2.2-6.el6_0.1.s390x.rpm
vsftpd-debuginfo-2.2.2-6.el6_0.1.s390x.rpm
x86_64:
vsftpd-2.2.2-6.el6_0.1.x86_64.rpm
vsftpd-debuginfo-2.2.2-6.el6_0.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/vsftpd-2.2.2-6.el6_0.1.src.rpm
i386:
vsftpd-2.2.2-6.el6_0.1.i686.rpm
vsftpd-debuginfo-2.2.2-6.el6_0.1.i686.rpm
x86_64:
vsftpd-2.2.2-6.el6_0.1.x86_64.rpm
vsftpd-debuginfo-2.2.2-6.el6_0.1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
7. References:
https://www.redhat.com/security/data/cve/CVE-2011-0762.html
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is
details at https://www.redhat.com/security/team/contact/
Copyright 2011 Red Hat, Inc.
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