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Improper Resource Shutdown or Release

CVE-2021-26906

Medium
5.9/10

Summary

An issue was discovered in res_pjsip_session.c in Digium Asterisk through 13.38.1; 14.x, 15.x, and 16.x through 16.16.0; 17.x through 17.9.1; and 18.x through 18.2.0, and Certified Asterisk through 16.8-cert5. An SDP negotiation vulnerability in PJSIP allows a remote server to potentially crash Asterisk by sending specific SIP responses that cause an SDP negotiation failure.

  • HIGH
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-404 - Improper Resource Shutdown or Release

The program does not release or incorrectly releases a resource before it is made available for re-use.

References

Advisory Timeline

  • Published