GLSA-201001-05 : net-snmp: Authorization bypass

This script is Copyright (C) 2010-2015 Tenable Network Security, Inc.

Synopsis :

The remote Gentoo host is missing one or more security-related

Description :

The remote host is affected by the vulnerability described in GLSA-201001-05
(net-snmp: Authorization bypass)

The netsnmp_udp_fmtaddr() function (snmplib/snmpUDPDomain.c), when
using TCP wrappers for client authorization, does not properly parse
hosts.allow rules.

Impact :

A remote, unauthenticated attacker could bypass the ACL filtering,
possibly resulting in the execution of arbitrary SNMP queries.

Workaround :

If possible, protect net-snmp with custom iptables rules:
iptables -s [client] -d [host] -p udp --dport 161 -j ACCEPT
iptables -s -d [host] -p udp --dport 161 -j DROP

See also :

Solution :

All net-snmp users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-analyzer/net-snmp-'

Risk factor :

Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.3
Public Exploit Available : true

Family: Gentoo Local Security Checks

Nessus Plugin ID: 44894 (gentoo_GLSA-201001-05.nasl)

Bugtraq ID: 33755

CVE ID: CVE-2008-6123

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