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Junos FPC Denial of Service Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
JunOS is prone to a Denial of Service Vulnerability.
Insight
Insight
Traffic between the RE and transit interfaces is carried over an internal network between the PFEs and REs. Some REs use em interfaces (usually, em0 and em1) to connect to this network. Receipt of a carefully crafted set of fragmented packets, destined to the router, can cause the em driver to become permanently blocked when trying to formulate a reply.
Affected Software
Affected Software
Junos OS 11.4, 12.1, 12.2, 12.3, 13.1, 13.2
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. As a workaround filter fragmented packets destined to the router.