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TCP Sequence Number Approximation Reset 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

10 years ago

Modified

Modified

4 years ago

Summary

The host is running TCP services and is prone to denial of service vulnerability.

Insight

Insight

The flaw is triggered when spoofed TCP Reset packets are received by the targeted TCP stack and will result in loss of availability for the attacked TCP services.

Affected Software

Affected Software

TCP/IP v4

Detection Method

Detection Method

A TCP Reset packet with a different sequence number is sent to the target. A previously open connection is then checked to see if the target closed it or not.

Solution

Solution

Please see the referenced advisories for more information on obtaining and applying fixes.

Common Vulnerabilities and Exposures (CVE)