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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.