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Category:   Application (Generic)  >   Net-snmp Vendors:   net-snmp.sourceforge.net
Net-snmp GETBULK Request Processing Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1022448
SecurityTracker URL:  http://securitytracker.com/id/1022448
CVE Reference:   CVE-2009-1887   (Links to External Site)
Date:  Jun 25 2009
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Net-snmp. A remote user can cause denial of service conditions.

A remote user can send a specially crafted GETBULK request to trigger a divide-by-zero error and cause the target snmpd service to crash.

Red Hat Enterprise Linux version 3 is affected.

The upstream vendor's version is not affected.

The vulnerable code was introduced as part of the fix for CVE-2008-4309 (Alert ID 1021129). However, the upstream version has additional code that prevents the flaw from occurring that the Red Hat Enterprise Linux 3 version did not have.

Impact:   A remote user can cause the target snmpd daemon to crash.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2009-1124.html

Vendor URL:  www.net-snmp.org/ (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  3

Message History:   This archive entry has one or more follow-up message(s) listed below.
Feb 16 2010 (VMware Issues Fix for ESX) Net-snmp GETBULK Request Processing Bug Lets Remote Users Deny Service
VMware has issued a fix for ESX Service Console.



 Source Message Contents

Subject:  [RHSA-2009:1124-01] Moderate: net-snmp security update

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Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: net-snmp security update
Advisory ID:       RHSA-2009:1124-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2009-1124.html
Issue date:        2009-06-25
CVE Names:         CVE-2009-1887 
=====================================================================

1. Summary:

Updated net-snmp packages that fix a security issue are now available for
Red Hat Enterprise Linux 3.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Description:

The Simple Network Management Protocol (SNMP) is a protocol used for
network management.

A divide-by-zero flaw was discovered in the snmpd daemon. A remote attacker
could issue a specially-crafted GETBULK request that could crash the snmpd
daemon. (CVE-2009-1887)

Note: An attacker must have read access to the SNMP server in order to
exploit this flaw. In the default configuration, the community name
"public" grants read-only access. In production deployments, it is
recommended to change this default community name.

All net-snmp users should upgrade to these updated packages, which contain
a backported patch to correct this issue. After installing the update, the
snmpd and snmptrapd daemons 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/):

506903 - CVE-2009-1887 net-snmp: DoS (division by zero) via SNMP GetBulk requests

6. Package List:

Red Hat Enterprise Linux AS version 3:

Source:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/net-snmp-5.0.9-2.30E.28.src.rpm

i386:
net-snmp-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-devel-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-perl-5.0.9-2.30E.28.i386.rpm
net-snmp-utils-5.0.9-2.30E.28.i386.rpm

ia64:
net-snmp-5.0.9-2.30E.28.ia64.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.ia64.rpm
net-snmp-devel-5.0.9-2.30E.28.ia64.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.ia64.rpm
net-snmp-perl-5.0.9-2.30E.28.ia64.rpm
net-snmp-utils-5.0.9-2.30E.28.ia64.rpm

ppc:
net-snmp-5.0.9-2.30E.28.ppc.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.ppc.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.ppc64.rpm
net-snmp-devel-5.0.9-2.30E.28.ppc.rpm
net-snmp-libs-5.0.9-2.30E.28.ppc.rpm
net-snmp-libs-5.0.9-2.30E.28.ppc64.rpm
net-snmp-perl-5.0.9-2.30E.28.ppc.rpm
net-snmp-utils-5.0.9-2.30E.28.ppc.rpm

s390:
net-snmp-5.0.9-2.30E.28.s390.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.s390.rpm
net-snmp-devel-5.0.9-2.30E.28.s390.rpm
net-snmp-libs-5.0.9-2.30E.28.s390.rpm
net-snmp-perl-5.0.9-2.30E.28.s390.rpm
net-snmp-utils-5.0.9-2.30E.28.s390.rpm

s390x:
net-snmp-5.0.9-2.30E.28.s390x.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.s390.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.s390x.rpm
net-snmp-devel-5.0.9-2.30E.28.s390x.rpm
net-snmp-libs-5.0.9-2.30E.28.s390.rpm
net-snmp-libs-5.0.9-2.30E.28.s390x.rpm
net-snmp-perl-5.0.9-2.30E.28.s390x.rpm
net-snmp-utils-5.0.9-2.30E.28.s390x.rpm

x86_64:
net-snmp-5.0.9-2.30E.28.x86_64.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.x86_64.rpm
net-snmp-devel-5.0.9-2.30E.28.x86_64.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.x86_64.rpm
net-snmp-perl-5.0.9-2.30E.28.x86_64.rpm
net-snmp-utils-5.0.9-2.30E.28.x86_64.rpm

Red Hat Desktop version 3:

Source:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/net-snmp-5.0.9-2.30E.28.src.rpm

i386:
net-snmp-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-devel-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-perl-5.0.9-2.30E.28.i386.rpm
net-snmp-utils-5.0.9-2.30E.28.i386.rpm

x86_64:
net-snmp-5.0.9-2.30E.28.x86_64.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.x86_64.rpm
net-snmp-devel-5.0.9-2.30E.28.x86_64.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.x86_64.rpm
net-snmp-perl-5.0.9-2.30E.28.x86_64.rpm
net-snmp-utils-5.0.9-2.30E.28.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

Source:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/net-snmp-5.0.9-2.30E.28.src.rpm

i386:
net-snmp-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-devel-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-perl-5.0.9-2.30E.28.i386.rpm
net-snmp-utils-5.0.9-2.30E.28.i386.rpm

ia64:
net-snmp-5.0.9-2.30E.28.ia64.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.ia64.rpm
net-snmp-devel-5.0.9-2.30E.28.ia64.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.ia64.rpm
net-snmp-perl-5.0.9-2.30E.28.ia64.rpm
net-snmp-utils-5.0.9-2.30E.28.ia64.rpm

x86_64:
net-snmp-5.0.9-2.30E.28.x86_64.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.x86_64.rpm
net-snmp-devel-5.0.9-2.30E.28.x86_64.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.x86_64.rpm
net-snmp-perl-5.0.9-2.30E.28.x86_64.rpm
net-snmp-utils-5.0.9-2.30E.28.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

Source:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/net-snmp-5.0.9-2.30E.28.src.rpm

i386:
net-snmp-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-devel-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-perl-5.0.9-2.30E.28.i386.rpm
net-snmp-utils-5.0.9-2.30E.28.i386.rpm

ia64:
net-snmp-5.0.9-2.30E.28.ia64.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.ia64.rpm
net-snmp-devel-5.0.9-2.30E.28.ia64.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.ia64.rpm
net-snmp-perl-5.0.9-2.30E.28.ia64.rpm
net-snmp-utils-5.0.9-2.30E.28.ia64.rpm

x86_64:
net-snmp-5.0.9-2.30E.28.x86_64.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.i386.rpm
net-snmp-debuginfo-5.0.9-2.30E.28.x86_64.rpm
net-snmp-devel-5.0.9-2.30E.28.x86_64.rpm
net-snmp-libs-5.0.9-2.30E.28.i386.rpm
net-snmp-libs-5.0.9-2.30E.28.x86_64.rpm
net-snmp-perl-5.0.9-2.30E.28.x86_64.rpm
net-snmp-utils-5.0.9-2.30E.28.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-2009-1887
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2009 Red Hat, Inc.
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