Net-SNMP subagent AgentX denial of service

netsnmp-cve20126151-dos (89485) The risk level is classified as MediumMedium Risk


Net-SNMP is vulnerable to a denial of service, caused by a timeout when the subagent AgentX is under a heavy load. By sending multiple GETNEXT requests, a remote attacker could exploit this vulnerability to cause the snmpd process to crash.


Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
Temporal Score: 4
  Exploitability: Unproven
  Remediation Level: Unavailable
  Report Confidence: Uncorroborated


Denial of Service


Apply the appropriate patch for your system. See References.


  • Net-SNMP Web site: Net-SNMP.
  • Red Hat Bugzilla Bug 1038007 : (CVE-2012-6151) CVE-2012-6151 net-snmp: snmpd crashes/hangs when AgentX subagent times-out.
  • BID-64048: Net-SNMP SNMPD AgentX Subagent Timeout Denial of Service Vulnerability
  • CVE-2012-6151: 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.
  • RHSA-2014-0322: Moderate: net-snmp security update
  • SA55804: Net-SNMP SNMPD GETNEXT Requests Timeout Handling Denial of Service Vulnerability

Platforms Affected:

  • Net-SNMP Net-SNMP 5.7.1
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client Workstation


Dec 09, 2013

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