OpenSC Multiple Denial of Service Vulnerabilities



Date Discovered

October 23, 2019


OpenSC is prone to multiple denial-of-service vulnerabilities. An attacker can exploit this issue to cause denial-of-service conditions. OpenSC through version 0.19.0 and 0.20.x through 0.20.0-rc3 are vulnerable.

Technologies Affected

  • Opensc-Project Opensc 0.10.0
  • Opensc-Project Opensc 0.10.1
  • Opensc-Project Opensc 0.11.0
  • Opensc-Project Opensc 0.11.1
  • Opensc-Project Opensc 0.11.2
  • Opensc-Project Opensc 0.11.3
  • Opensc-Project Opensc 0.11.4
  • Opensc-Project Opensc 0.11.5
  • Opensc-Project Opensc 0.19.0
  • Opensc-Project Opensc 0.19.0-rc1
  • Opensc-Project Opensc 0.20.0
  • Opensc-Project Opensc 0.20.0-rc1
  • Opensc-Project Opensc 0.20.0-rc3
  • Opensc-Project Opensc 0.4.0
  • Opensc-Project Opensc 0.5.0
  • Opensc-Project Opensc 0.6.0
  • Opensc-Project Opensc 0.6.1
  • Opensc-Project Opensc 0.7.0
  • Opensc-Project Opensc 0.8.0
  • Opensc-Project Opensc 0.8.1
  • Opensc-Project Opensc 0.9.2
  • Opensc-Project Opensc 0.9.3
  • Opensc-Project Opensc 0.9.4
  • Opensc-Project Opensc 0.9.5
  • Opensc-Project Opensc 0.9.6


Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This may indicate exploit attempts or activity that results from successful exploits.

Do not accept or execute files from untrusted or unknown sources.
To reduce the likelihood of successful exploits, never handle files that originate from unfamiliar or untrusted sources.

Updates are available. Please see the references or vendor advisory for more information.



The vendor reported these issues.

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