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Liebe Kolleginnen und Kollegen,
soeben erreichte uns nachfolgendes RedHat Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.
CVE-2009-3111 – Heap Overflow in der FreeRADIUS Funktion rad_decode()
Beim Umgang mit Attributen der Laenge 0 laesst sich in der FreeRADIUS
Funktion rad_decode() ein Heap Overflow ausloesen. Ein entfernter
Angreifer kann diese Schwachstelle dazu ausnutzen, den RADIUS Server
zum Absturz zu bringen (Denial of Service). Diese Schwachstelle war in
aelteren FreeRADIUS Versionen als CVE-2003-0967 bereits behoben, ist
jetzt aber erneut aufgetreten.
CVE-2003-0967 – Heap Overflow in der FreeRADIUS Funktion rad_decode()
Beim Umgang mit bestimmten Attributen laesst sich in der FreeRADIUS
Funktion rad_decode() ein Heap Overflow ausloesen. Ein entfernter
Angreifer kann diese Schwachstelle dazu ausnutzen, den RADIUS Server
zum Absturz zu bringen (Denial of Service).
Betroffen sind die folgenden Software Pakete und Plattformen:
Paket freeradius
RHEL Desktop Workstation (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux (v. 5 server) – i386, ia64, ppc, s390x, x86_64
Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.
Hersteller Advisory:
https://rhn.redhat.com/errata/RHSA-2009-1451.html
(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,
Klaus Moeller, DFN-CERT
– —
Dipl. Inform. Klaus Moeller (Incident Response Team)
Phone: +49 40 808077-555, Fax: +49 40 808077-556
DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-555
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrase 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski
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=====================================================================
Red Hat Security Advisory
Synopsis: Moderate: freeradius security update
Advisory ID: RHSA-2009:1451-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-1451.html
Issue date: 2009-09-17
CVE Names: CVE-2009-3111
=====================================================================
1. Summary:
Updated freeradius packages that fix a security issue are now available for
Red Hat Enterprise Linux 5.
This update has been rated as having moderate security impact by the Red
Hat Security Response Team.
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
3. Description:
FreeRADIUS is a high-performance and highly configurable free Remote
Authentication Dial In User Service (RADIUS) server, designed to allow
centralized authentication and authorization for a network.
An input validation flaw was discovered in the way FreeRADIUS decoded
specific RADIUS attributes from RADIUS packets. A remote attacker could use
this flaw to crash the RADIUS daemon (radiusd) via a specially-crafted
RADIUS packet. (CVE-2009-3111)
Users of FreeRADIUS are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. After installing the
update, radiusd will be restarted automatically.
4. Solution:
Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.
This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259
5. Bugs fixed (http://bugzilla.redhat.com/):
521912 – CVE-2009-3111 FreeRADIUS: Missing check for Tunnel-Password attributes with zero length (DoS) — re-appearance of CVE-2003-0967
6. Package List:
RHEL Desktop Workstation (v. 5 client):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/freeradius-1.1.3-1.5.el5_4.src.rpm
i386:
freeradius-1.1.3-1.5.el5_4.i386.rpm
freeradius-debuginfo-1.1.3-1.5.el5_4.i386.rpm
freeradius-mysql-1.1.3-1.5.el5_4.i386.rpm
freeradius-postgresql-1.1.3-1.5.el5_4.i386.rpm
freeradius-unixODBC-1.1.3-1.5.el5_4.i386.rpm
x86_64:
freeradius-1.1.3-1.5.el5_4.x86_64.rpm
freeradius-debuginfo-1.1.3-1.5.el5_4.x86_64.rpm
freeradius-mysql-1.1.3-1.5.el5_4.x86_64.rpm
freeradius-postgresql-1.1.3-1.5.el5_4.x86_64.rpm
freeradius-unixODBC-1.1.3-1.5.el5_4.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/freeradius-1.1.3-1.5.el5_4.src.rpm
i386:
freeradius-1.1.3-1.5.el5_4.i386.rpm
freeradius-debuginfo-1.1.3-1.5.el5_4.i386.rpm
freeradius-mysql-1.1.3-1.5.el5_4.i386.rpm
freeradius-postgresql-1.1.3-1.5.el5_4.i386.rpm
freeradius-unixODBC-1.1.3-1.5.el5_4.i386.rpm
ia64:
freeradius-1.1.3-1.5.el5_4.ia64.rpm
freeradius-debuginfo-1.1.3-1.5.el5_4.ia64.rpm
freeradius-mysql-1.1.3-1.5.el5_4.ia64.rpm
freeradius-postgresql-1.1.3-1.5.el5_4.ia64.rpm
freeradius-unixODBC-1.1.3-1.5.el5_4.ia64.rpm
ppc:
freeradius-1.1.3-1.5.el5_4.ppc.rpm
freeradius-debuginfo-1.1.3-1.5.el5_4.ppc.rpm
freeradius-mysql-1.1.3-1.5.el5_4.ppc.rpm
freeradius-postgresql-1.1.3-1.5.el5_4.ppc.rpm
freeradius-unixODBC-1.1.3-1.5.el5_4.ppc.rpm
s390x:
freeradius-1.1.3-1.5.el5_4.s390x.rpm
freeradius-debuginfo-1.1.3-1.5.el5_4.s390x.rpm
freeradius-mysql-1.1.3-1.5.el5_4.s390x.rpm
freeradius-postgresql-1.1.3-1.5.el5_4.s390x.rpm
freeradius-unixODBC-1.1.3-1.5.el5_4.s390x.rpm
x86_64:
freeradius-1.1.3-1.5.el5_4.x86_64.rpm
freeradius-debuginfo-1.1.3-1.5.el5_4.x86_64.rpm
freeradius-mysql-1.1.3-1.5.el5_4.x86_64.rpm
freeradius-postgresql-1.1.3-1.5.el5_4.x86_64.rpm
freeradius-unixODBC-1.1.3-1.5.el5_4.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://www.redhat.com/security/team/key/#package
7. References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3111
http://www.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is
details at https://www.redhat.com/security/team/contact/
Copyright 2009 Red Hat, Inc.
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