The PJSIP channel driver in Asterisk Open Source 12.x before 12.1.1, when qualify_frequency "is enabled on an AOR and the remote SIP server challenges for authentication of the resulting OPTIONS request," allows remote attackers to cause a denial of service (crash) via a PJSIP endpoint that does not have an associated outgoing request.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade asterisk18Upgrade asterisk11 | Dec 10, 2025 | Mar 10, 2014 |
| Gentoo Linux | — | Upgrade net-misc/asterisk. | Oct 30, 2017 | Apr 18, 2014 |
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