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/showbug.cgi?id=250429

Upstream patch: http://net-snmp.svn.sourceforge.net/viewvc/net-snmp?view=rev&revision=17367

The SNMP agent (snmpagent.c) in net-snmp before 5.4.1 allows remote attackers to cause a denial of service (CPU and memory consumption) via a GETBULK request with a large max-repeaters value.

Buffer overflow in the snprintvalue function in snmpget in Net-SNMP 5.1.4, 5.2.4, and 5.4.1, as used in SNMP.xs for Perl, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large OCTETSTRING in an attribute value pair (AVP).