Net-SNMP: Denial of Service

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200711-31 / net-snmp
Release Date	November 20, 2007
Latest Revision	November 20, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-analyzer/net-snmp	< 5.4.1-r1	>= 5.4.1-r1	All supported architectures

Related bugreports: #198346

Synopsis

A Denial of Service vulnerability has been discovered in Net-SNMP when processing GETBULK requests.

2. Impact Information

Background

Net-SNMP is a collection of tools for generating and retrieving SNMP data.

Description

The SNMP agent (snmpd) does not properly handle GETBULK requests with an overly large "max-repetitions" field.

Impact

A remote unauthenticated attacker could send a specially crafted SNMP request to the vulnerable application, possibly resulting in a high CPU and memory consumption.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Net-SNMP users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/net-snmp-5.4.1-r1"

4. References

CVE-2007-5846

Page updated November 20, 2007

Summary: This is a Gentoo Linux Security Advisory

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