CVE-2020-28242
Description
An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5. If Asterisk is challenged on an outbound INVITE and the nonce is changed in each response, Asterisk will continually send INVITEs in a loop. This causes Asterisk to consume more and more memory since the transaction will never terminate (even if the call is hung up), ultimately leading to a restart or shutdown of Asterisk. Outbound authentication must be configured on the endpoint for this to occur.
How to fix
- sangoma asterisk13.37.1, 16.14.1, 17.8.1, 18.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| asterisk certified_asterisk | v ≤ 16.8.0 | — |
| sangoma asterisk | 13.0 ≤ v < 13.37.1, 16.0 ≤ v < 16.14.1, 17.0 ≤ v < 17.8.1, 18.0 ≤ v < 18.0.1 | 13.37.1, 16.14.1, 17.8.1, 18.0.1 |
| fedoraproject fedora | 33 | — |
| debian debian_linux | 9.0 | — |
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