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Category:   Application (VoIP)  >   Asterisk Vendors:   Digium (Linux Support Services)
Asterisk WebSocket Payload Processing Bug Lets Remote Authenticated Users Cause Denial of Service Conditions
SecurityTracker Alert ID:  1040419
SecurityTracker URL:
CVE Reference:   CVE-2018-7287   (Links to External Site)
Date:  Feb 22 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 15.x
Description:   A vulnerability was reported in Asterisk. A remote authenticated user can cause denial of service conditions.

The system does not properly read WebSocket frames with a zero payload length. A remote authenticated user can exploit this to cause the system to enter a busy loop until the underlying connection is closed.

The default configuration does not enable the vulnerable HTTP server component.

Sean Bright reported this vulnerability.

Impact:   A remote authenticated user can cause denial of service conditions.
Solution:   The vendor has issued a fix (15.2.2).

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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