net security update

CentOS Errata and Security Advisory CESA-2008:0971

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

A denial-of-service flaw was found in the way Net-SNMP processes SNMP
GETBULK requests. A remote attacker who issued a specially-crafted request
could cause the snmpd server to crash. (CVE-2008-4309)

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 users of net-snmp should upgrade to these updated packages, which
contain a backported patch to resolve this issue.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2008-November/077527.html
https://lists.centos.org/pipermail/centos-announce/2008-November/077528.html
https://lists.centos.org/pipermail/centos-announce/2008-November/077529.html
https://lists.centos.org/pipermail/centos-announce/2008-November/077530.html
https://lists.centos.org/pipermail/centos-announce/2008-November/077547.html
https://lists.centos.org/pipermail/centos-announce/2008-November/077548.html
https://lists.centos.org/pipermail/centos-announce/2008-November/077549.html
https://lists.centos.org/pipermail/centos-announce/2008-November/077550.html

Affected packages:
net-snmp
net-snmp-devel
net-snmp-libs
net-snmp-perl
net-snmp-utils

Upstream details at:
https://access.redhat.com/errata/RHSA-2008:0971