Enterasys Network Management Suite Syslog service buffer overflow

enterasys-syslog-bo (71889) The risk level is classified as HighHigh Risk


Enterasys Network Management Suite is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the Syslog service (nssyslogd.exe) when processing the PRIO field. By sending an overly long message to UDP port 514, a remote attacker could overflow a buffer and execute arbitrary code on the system with SYSTEM-level privileges or cause the application to crash.


Base Score: 10
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
Temporal Score: 7.4
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed


Gain Access


Upgrade to the latest version of Network Management Suite ( or later), available from the Enterasys Web site. See References.


  • Enterasys Web site: Network Management Suite.
  • Offensive Security Exploit Database [01-04-2013]: Enterasys NetSight nssyslogd.exe Buffer Overflow.
  • Packet Storm Web site: Enterasys NetSight nssyslogd.exe Buffer Overflow.
  • ZDI-11-350: Enterasys NetSight nssyslogd PRI Remote Code Execution Vulnerability.
  • BID-51124: Enterasys Network Management Suite 'nssyslogd.exe' Component Stack Buffer Overflow Vulnerability
  • CVE-2011-5227: Stack-based buffer overflow in the Syslog service (nssyslogd.exe) in Enterasys Network Management Suite (NMS) before allows remote attackers to execute arbitrary code via a long PRIO field in a message to UDP port 514.
  • OSVDB ID: 77971: Enterasys Network Management Suite Syslog Service nssyslogd.exe PRIO Field Parsing Remote Overflow
  • SA47263: Enterasys Network Management Suite Syslog Buffer Overflow Vulnerability

Platforms Affected:

  • Enterasys Network Management Suite


Dec 19, 2011

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