| Package | Affected versions | Patched versions |
|---|---|---|
| asterisk | ≥ 13.0.0, < 13.38.2≥ 16.0.0, < 16.16.1≥ 17.0.0, < 17.9.2≥ 18.0, < 18.2.1 | 13.38.216.16.117.9.218.2.1 |
| certified asterisk | = 16.8 |
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.
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