CVE-2008-4309
HighSummary
Heap buffer overflow in the netsnmp_create_subtree_cache function in net-snmp before version 5.4.2.1, 5.3.2.3, and 5.2.5.1 allows remote attackers to cause a denial of service (crash) via a crafted SNMP GETBULK request.
Risk Assessment
Attackers can exploit this vulnerability to remotely crash the SNMP server, leading to service unavailability.
Recommendation
It is recommended to upgrade to the latest version of net-snmp to mitigate this vulnerability.
Other vulnerabilities in net-snmp
See all- CVE-2015-5621High
The snmp_pdu_parse function in net-snmp version 5.7.2 and earlier does not remove the varBind variable in a netsnmp_variable_list item when parsing of the SNMP PDU fails. This allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted packet.
- CVE-2026-89147High
Net-SNMP through 5.9.5.2 contains a denial of service vulnerability in the SMUX module where smux_accept() performs an unauthenticated blocking read without timeout on newly accepted connections. An unauthenticated remote client can connect to the SMUX listener and send no data, causing the single-threaded snmpd main loop to block indefinitely and suspend all SNMP processing.
Original NVD description (English source)
Integer overflow in the netsnmp_create_subtree_cache function in agent/snmp_agent.c in net-snmp 5.4 before 5.4.2.1, 5.3 before 5.3.2.3, and 5.2 before 5.2.5.1 allows remote attackers to cause a denial of service (crash) via a crafted SNMP GETBULK request, which triggers a heap-based buffer overflow, related to the number of responses or repeats.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS