Asterisk Open Source 1.8.x, 11.x before 11.21.1, 12.x, and 13.x before 13.7.1 and Certified Asterisk 1.8.28, 11.6 before 11.6-cert12, and 13.1 before 13.1-cert3 allow remote authenticated users to cause a denial of service (uninitialized pointer dereference and crash) via a zero length error correcting redundancy packet for a UDPTL FAX packet that is lost.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade asterisk | Oct 26, 2016 | Feb 22, 2016 |
| Freebsd | — | Upgrade asterisk11Upgrade asteriskUpgrade asterisk13 | Dec 10, 2025 | Feb 4, 2016 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Feb 22, 2016 |
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