RHEL 6 : net-snmp (RHSA-2014:0321)

Medium Nessus Plugin ID 73174


The remote Red Hat host is missing one or more security updates.


Updated net-snmp packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having Moderate 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.

The net-snmp packages provide various libraries and tools for the Simple Network Management Protocol (SNMP), including an SNMP library, an extensible agent, tools for requesting or setting information from SNMP agents, tools for generating and handling SNMP traps, a version of the netstat command which uses SNMP, and a Tk/Perl Management Information Base (MIB) browser.

A buffer overflow flaw was found in the way the decode_icmp_msg() function in the ICMP-MIB implementation processed Internet Control Message Protocol (ICMP) message statistics reported in the /proc/net/snmp file. A remote attacker could send a message for each ICMP message type, which could potentially cause the snmpd service to crash when processing the /proc/net/snmp file. (CVE-2014-2284)

This update also fixes the following bug :

* The snmpd service parses the /proc/diskstats file to track disk usage statistics for UCD-DISKIO-MIB::diskIOTable. On systems with a large number of block devices, /proc/diskstats may be large in size and parsing it can take a non-trivial amount of CPU time. With this update, Net-SNMP introduces a new option, 'diskio', in the /etc/snmp/snmpd.conf file, which can be used to explicitly specify devices that should be monitored. Only these whitelisted devices are then reported in UCD-DISKIO-MIB::diskIOTable, thus speeding up snmpd on systems with numerous block devices. (BZ#990674)

All net-snmp users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, the snmpd service will be restarted automatically.


Update the affected packages.

See Also



Plugin Details

Severity: Medium

ID: 73174

File Name: redhat-RHSA-2014-0321.nasl

Version: $Revision: 1.4 $

Type: local

Agent: unix

Published: 2014/03/25

Modified: 2017/01/06

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:net-snmp, p-cpe:/a:redhat:enterprise_linux:net-snmp-debuginfo, p-cpe:/a:redhat:enterprise_linux:net-snmp-devel, p-cpe:/a:redhat:enterprise_linux:net-snmp-libs, p-cpe:/a:redhat:enterprise_linux:net-snmp-perl, p-cpe:/a:redhat:enterprise_linux:net-snmp-python, p-cpe:/a:redhat:enterprise_linux:net-snmp-utils, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.5

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2014/03/24

Reference Information

CVE: CVE-2014-2284

BID: 65867

RHSA: 2014:0321