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Asterisk T.38 Negotiation Remote Denial Of Service Vulnerability

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

12 years ago

Modified

Modified

3 years ago

Summary

This host is running Asterisk and is prone to Denial of Service vulnerability.

Insight

Insight

The flaw is caused by an error when handling 'T.38 negotiations' over SIP with a negative or overly large value in the 'FaxMaxDatagram' field, or without any 'FaxMaxDatagram' field, which could allows attackers to crash a server.

Affected Software

Affected Software

Asterisk version 1.6.0.x before 1.6.0.22, 1.6.1.x before 1.6.1.14, and 1.6.2.x before 1.6.2.2

Solution

Solution

Upgrade to version 1.6.0.22, 1.6.1.14, 1.6.2.2 or apply the patch from the linked references

Common Vulnerabilities and Exposures (CVE)