Free and open-source vulnerability scanner

Mageni eases for you the vulnerability scanning, assessment, and management process. It is free and open-source.

Install Now

Available for macOS, Windows, and Linux

App screenshot

Asterisk Audio Transcoding DoS Vulnerability (AST-2019-005)

Information

Severity

Severity

Medium

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

4 years ago

Modified

Modified

4 years ago

Summary

Asterisk is prone to a denial of service vulnerability in audio transcoding.

Insight

Insight

This issue presented itself when an RTP packet containing no audio (and thus no samples) was received. In a particular transcoding scenario this audio frame would get turned into a frame with no origin information. If this new frame was then given to the audio transcoding support a crash would occur as no samples and no origin information would be present. The transcoding scenario requires the 'genericplc' option to be set to enabled (the default) and a transcoding path from the source format into signed linear and then from signed linear into another format.

Affected Software

Affected Software

Asterisk Open Source 13.28.0 and 16.5.0.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Upgrade to Version 13.28.1, 16.5.1 or later.

Common Vulnerabilities and Exposures (CVE)