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Category:   Application (Generic)  >   nfs-utils Vendors:   nfs.sourceforge.net
(Red Hat Issues Fix) nfs-utils rquota Buffer Overflow on 64-bit Systems May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1012872
SecurityTracker URL:  http://securitytracker.com/id/1012872
CVE Reference:   CAN-2004-0946   (Links to External Site)
Date:  Jan 13 2005
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): possibly affects 1.07-pre2 and prior versions
Description:   A buffer overflow vulnerability was reported in nfs-utils, affecting 64-bit systems. A remote user may be able to execute arbitrary code.

It is reported that on 64-bit systems, a remote user may be able to trigger a memcpy() buffer overflow in 'rquota_server.c'. Data from the dqblk structure that is 64 bits (on 64-bit systems) is copied into the rquota structure to a 32-bit variable.

Arjan van de Ven is credited with discovering this flaw.
Impact:   A remote user may be able to execute arbitrary code on the target system.
Solution:   Red Hat has released a fix.

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/nfs-utils-0.3.3-11.src.rpm
9553612895ebfaa51e95f6ca30917ae3 nfs-utils-0.3.3-11.src.rpm

i386:
b5e37053bfa2a629ad89cf8aa55fdd81 nfs-utils-0.3.3-11.i386.rpm

ia64:
1acfa8622a1a9a98f676e8d5e8ada932 nfs-utils-0.3.3-11.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/nfs-utils-0.3.3-11.src.rpm
9553612895ebfaa51e95f6ca30917ae3 nfs-utils-0.3.3-11.src.rpm

ia64:
1acfa8622a1a9a98f676e8d5e8ada932 nfs-utils-0.3.3-11.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/nfs-utils-0.3.3-11.src.rpm
9553612895ebfaa51e95f6ca30917ae3 nfs-utils-0.3.3-11.src.rpm

i386:
b5e37053bfa2a629ad89cf8aa55fdd81 nfs-utils-0.3.3-11.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/nfs-utils-0.3.3-11.src.rpm
9553612895ebfaa51e95f6ca30917ae3 nfs-utils-0.3.3-11.src.rpm

i386:
b5e37053bfa2a629ad89cf8aa55fdd81 nfs-utils-0.3.3-11.i386.rpm
Vendor URL:  nfs.sourceforge.net/ (Links to External Site)
Cause:   Boundary error
Underlying OS:   Linux (Red Hat Enterprise)

Message History:   This archive entry is a follow-up to the message listed below.
Dec 14 2004 nfs-utils rquota Buffer Overflow on 64-bit Systems May Let Remote Users Execute Arbitrary Code


 Source Message Contents
Date:  Wed, 12 Jan 2005 13:54 -0500
Subject:  [RHSA-2005:014-01] Updated nfs-utils package fixes security


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- ---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Updated nfs-utils package fixes security vulnerabilities
Advisory ID:       RHSA-2005:014-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2005-014.html
Issue date:        2005-01-12
Updated on:        2005-01-12
Product:           Red Hat Enterprise Linux
CVE Names:         CAN-2004-1014 CAN-2004-0946
- ---------------------------------------------------------------------

1. Summary:

An updated nfs-utils package that fixes various security issues is now
available.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386

3. Problem description:

The nfs-utils package provides a daemon for the kernel NFS server and
related tools.

SGI reported that the statd daemon did not properly handle the SIGPIPE
signal.  A misconfigured or malicious peer could cause statd to crash,
leading to a denial of service.  The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the name CAN-2004-1014 to this issue.

Arjan van de Ven discovered a buffer overflow in rquotad.  On 64-bit
architectures, an improper integer conversion can lead to a buffer
overflow.  An attacker with access to an NFS share could send a specially
crafted request which could lead to the execution of arbitrary code.  The
Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CAN-2004-0946 to this issue.

All users of nfs-utils should upgrade to this updated package, which
resolves these issues.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  Use Red Hat
Network to download and update your packages.  To launch the Red Hat
Update Agent, use the following command:

    up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

    http://www.redhat.com/docs/manuals/enterprise/

5. Bug IDs fixed (http://bugzilla.redhat.com/):

144652 - CAN-2004-1014 DoS in statd
138063 - CAN-2004-0946 buffer overflow in rquotad

6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/nfs-utils-0.3.3-11.src.rpm
9553612895ebfaa51e95f6ca30917ae3  nfs-utils-0.3.3-11.src.rpm

i386:
b5e37053bfa2a629ad89cf8aa55fdd81  nfs-utils-0.3.3-11.i386.rpm

ia64:
1acfa8622a1a9a98f676e8d5e8ada932  nfs-utils-0.3.3-11.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/nfs-utils-0.3.3-11.src.rpm
9553612895ebfaa51e95f6ca30917ae3  nfs-utils-0.3.3-11.src.rpm

ia64:
1acfa8622a1a9a98f676e8d5e8ada932  nfs-utils-0.3.3-11.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/nfs-utils-0.3.3-11.src.rpm
9553612895ebfaa51e95f6ca30917ae3  nfs-utils-0.3.3-11.src.rpm

i386:
b5e37053bfa2a629ad89cf8aa55fdd81  nfs-utils-0.3.3-11.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/nfs-utils-0.3.3-11.src.rpm
9553612895ebfaa51e95f6ca30917ae3  nfs-utils-0.3.3-11.src.rpm

i386:
b5e37053bfa2a629ad89cf8aa55fdd81  nfs-utils-0.3.3-11.i386.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=CAN-2004-1014
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0946

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.

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