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[Full-disclosure] [ GLSA 200901-15 ] Net-SNMP: Denial of Service
From: Pierre-Yves Rofes <py_at_nospam>Date: Wed Jan 21 2009 - 22:31:59 GMT
To: gentoo-announce@gentoo.org
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200901-15
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Synopsis
A vulnerability in Net-SNMP could lead to a Denial of Service.
Background
Net-SNMP is a collection of tools for generating and retrieving SNMP data.
Affected packages
Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-analyzer/net-snmp < 5.4.2.1 >= 5.4.2.1
Description
Oscar Mira-Sanchez reported an integer overflow in the netsnmp_create_subtree_cache() function in agent/snmp_agent.c when processing GETBULK requests.
Impact
A remote attacker could send a specially crafted request to crash the SNMP server. NOTE: The attacker needs to know the community string to exploit this vulnerability.
Workaround
Restrict access to trusted entities only.
Resolution
All Net-SNMP users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/net-snmp-5.4.2.1"
References
[ 1 ] CVE-2008-4309
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4309
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200901-15.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 http://bugs.gentoo.org.
License
Copyright 2009 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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