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Junos BGP FlowSpec Denial of Service Vulnerability

Information

Severity

Severity

High

Family

Family

JunOS Local Security Checks

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

9 years ago

Modified

Modified

5 years ago

Summary

Junos OS with BGB FlowSpec enabled are vulnerable to a Denial of Service attack.

Insight

Insight

Receipt of a malformed BGP FlowSpec prefix may cause the router to trigger an assert (programmatic crash) when detecting a certain specification violation. Rather than simply flagging, logging, and/or dropping the packet, the routing process daemon (rpd) will crash and restart.

Affected Software

Affected Software

Junos OS 11.4, 12.1, 12.2, 12.3 and 13.1

Detection Method

Detection Method

Checks if a vulnerable OS build is present on the target host.

Solution

Solution

New builds of Junos OS software are available from Juniper.

Common Vulnerabilities and Exposures (CVE)