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
Untrusted search path vulnerability in Net-SNMP 5.2.1.2 and earlier, on Gentoo Linux, installs certain Perl modules with an insecure DTRPATH, which could allow local users to gain privileges.
snmpapi.c in snmpd in Net-SNMP 5.2.x before 5.2.2, 5.1.x before 5.1.3, and 5.0.x before 5.0.10.2, when running in master agentx mode, allows remote attackers to cause a denial of service (crash) by causing a particular TCP disconnect, which triggers a free of an incorrect variable, a different vulnerability than CVE-2005-2177.
Net-SNMP 5.0.x before 5.0.10.2, 5.2.x before 5.2.1.2, and 5.1.3, when net-snmp is using stream sockets such as TCP, allows remote attackers to cause a denial of service (daemon hang and CPU consumption) via a TCP packet of length 1, which triggers an infinite loop.
fixproc in Net-snmp 5.x before 5.2.1-r1 creates temporary files insecurely, which allows local users to modify the contents of those files to execute arbitrary commands, or overwrite arbitrary files via a symlink attack.
agent/snmpagent.c in snmpd in net-snmp 5.0.9 in Red Hat Enterprise Linux (RHEL) 3 allows remote attackers to cause a denial of service (daemon crash) via a crafted SNMP GETBULK request that triggers a divide-by-zero error. NOTE: this vulnerability exists because of an incorrect fix for CVE-2008-4309.
Net-SNMP 5.7.1 and earlier, when AgentX is registering to handle a MIB and processing GETNEXT requests, allows remote attackers to cause a denial of service (crash or infinite loop, CPU consumption, and hang) by causing the AgentX subagent to timeout.
A remote denial-of-service flaw was found in the way snmptrapd handled certain SNMP traps when started with the "-OQ" option. If an attacker sent an SNMP trap containing a variable with a NULL type where an integer variable type was expected, it would cause snmptrapd to crash.