GLSA 200711-31: Net-SNMP: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	Net-SNMP: Denial of Service
Date:	11/20/2007
Bugs:	#198346
ID:	200711-31

Synopsis

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

Background

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

Affected packages

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

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.

Workaround

There is no known workaround at this time.

Resolution

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

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

References

CVE-2007-5846

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200711-31.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.