Signature Detail
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Short Name |
HTTP:DOS:WEBSOCKET-0PAYLOAD |
|---|---|
Severity |
Major |
Recommended |
Yes |
Recommended Action |
Drop |
Category |
HTTP |
Keywords |
Digium Asterisk WebSocket Frame Empty Payload Denial of Service |
Release Date |
2018/05/01 |
Update Number |
3061 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
HTTP: Digium Asterisk WebSocket Frame Empty Payload Denial of Service
This signature detects attempts to exploit a known vulnerability against Digium Asterisk. A successful attack can result in a denial-of-service condition.
Extended Description
An issue was discovered in res_http_websocket.c in Asterisk 15.x through 15.2.1. If the HTTP server is enabled (default is disabled), WebSocket payloads of size 0 are mishandled (with a busy loop).
Affected Products
- Digium asterisk 15.0.0
- Digium asterisk 15.1.0
- Digium asterisk 15.1.1
- Digium asterisk 15.1.2
- Digium asterisk 15.1.3
- Digium asterisk 15.1.4
- Digium asterisk 15.1.5
- Digium asterisk 15.2.0
- Digium asterisk 15.2.1
References
- BugTraq: 103120
- CVE: CVE-2018-7287