Openswan denial of service

openswan-pid-dos (67822) The risk level is classified as MediumMedium Risk


Openswan is vulnerable to a denial of service, caused by improper restrictions for and var/lock/subsys/ipsec. By writing arbitrary data to a file, a local attacker could exploit this vulnerability to kill arbitrary processes.


Base Score: 2.1
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
Temporal Score: 1.7
  Exploitability: Unproven
  Remediation Level: Unavailable
  Report Confidence: Uncorroborated


Denial of Service


No remedy available as of June 1, 2014.


  • Openswan Web site: Openswan.
  • Openswan Web site: Openswan.
  • BID-47958: Openswan Multiple PID Files Insecure File Permissions Vulnerability
  • CVE-2011-2147: Openswan 2.2.x does not properly restrict permissions for (1) /var/run/, related to starter.c in the IPsec starter, and (2) /var/lock/subsys/ipsec, which allows local users to kill arbitrary processes by writing a PID to a file, or possibly bypass disk quotas by writing arbitrary data to a file, as demonstrated by files with 0666 permissions, a different vulnerability than CVE-2011-1784.

Platforms Affected:

  • Open Source Openswan 2.2.0


May 10, 2011

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