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
Short Name
HTTP:DOS:WEBSOCKET-0PAYLOAD
Severity
Major
Recommended
True
Recommended Action
Drop
Category
HTTP
Keywords
Asterisk CVE-2018-7287 Denial Digium Empty Frame Payload Service WebSocket bid:103120 of
Release Date
05/02/2018
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3337
Port
TCP/8088
False Positive
Unknown
Vendors
Digium
CVSS Score
4.3