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Multiple AVM FRITZ!Box VoIP Remote Denial of Service Vulnerability

Information

Severity

Severity

High

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

7.8

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

4 years ago

Modified

Modified

4 years ago

Summary

Multiple AVM FRITZ!Box devices are prone to a Denial of Service.

Insight

Insight

Sending a zero-length UDP packet to port 5060 (SIP) of a AVM FRITZ!Box will crash the VoIP-telephony application. This works from any IP-interface, including the DSL line.

Detection Method

Detection Method

Check the AVM FRITZ!OS version.

Solution

Solution

Updates are available. Please see the references or the script output on the available updates for the matching model.

Common Vulnerabilities and Exposures (CVE)