A possibility of sensitive host information disclosure was found in the implementation of SNMP protocol as defined in RFC 1065, RFC 1066, and RFC 1067. If the snmpd deamon was running on the host, it served the SNMP queries regardless of the fact, the IP address of the requester was not mentioned in the list of hosts allowed to issue / request SNMP MIB objects information. Remote attacker could use this flaw to gain host related sensitive information via performing a SNMP query. References: http://bugs.gentoo.org/show_bug.cgi?id=250429 Upstream patch: http://net-snmp.svn.sourceforge.net/viewvc/net-snmp?view=rev&revision=17367
Common Vulnerabilities and Exposures assigned an identifier CVE-2008-6123 to the following vulnerability: The netsnmp_udp_fmtaddr function (snmplib/snmpUDPDomain.c) in net-snmp 5.0.9 through 5.4.2, when using TCP wrappers for client authorization, does not properly parse hosts.allow rules, which allows remote attackers to bypass intended access restrictions and execute SNMP queries, related to "source/destination IP address confusion." References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-6123 http://www.openwall.com/lists/oss-security/2009/02/12/2 http://bugs.gentoo.org/show_bug.cgi?id=250429 http://net-snmp.svn.sourceforge.net/viewvc/net-snmp?view=rev&revision=17367 :http://net-snmp.svn.sourceforge.net/viewvc/net-snmp/trunk/net-snmp/snmplib/snmpUDPDomain.c?r1=17325&r2=17367&pathrev=17367
This issue has been addressed in following products: Red Hat Enterprise Linux 3 Via RHSA-2009:0295 https://rhn.redhat.com/errata/RHSA-2009-0295.html