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Category:   Device (Router/Bridge/Hub)  >   Juniper Junos Vendors:   Juniper
Juniper Junos IP Next-Hop Index Database Bug Lets Remote Users Cause Denial of Service Conditions on the Target System
SecurityTracker Alert ID:  1041861
SecurityTracker URL:
CVE Reference:   CVE-2018-0063   (Links to External Site)
Date:  Oct 10 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 17.3R3 only
Description:   A vulnerability was reported in Juniper Junos. A remote user can cause denial of service conditions on the target system.

A remote user can send a flood of ARP requests to the management interface to fill the IP next-hop index database. As a result, no further hops can be learned and existing entries cannot be cleared.

The following is an indicator of this vulnerability:

%KERN-4: Nexthop index allocation failed: private index space exhausted

Regular transit traffic through the FPCs is not affected.

The vendor has assigned PR 1360039 to this vulnerability.

Impact:   A remote user can cause denial of service conditions on the target system.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   State error

Message History:   None.

 Source Message Contents



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