Vulnerability Details : CVE-2018-0063
A vulnerability in the IP next-hop index database in Junos OS 17.3R3 may allow a flood of ARP requests, sent to the management interface, to exhaust the private Internal routing interfaces (IRIs) next-hop limit. Once the IRI next-hop database is full, no further next hops can be learned and existing entries cannot be cleared, leading to a sustained denial of service (DoS) condition. An indicator of compromise for this issue is the report of the following error message: %KERN-4: Nexthop index allocation failed: private index space exhausted This issue only affects the management interface, and does not impact regular transit traffic through the FPCs. This issue also only affects Junos OS 17.3R3. No prior versions of Junos OS are affected by this issue. Affected releases are Juniper Networks Junos OS: 17.3R3.
Vulnerability category: Denial of service
Products affected by CVE-2018-0063
- cpe:2.3:o:juniper:junos:17.3:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-0063
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-0063
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.3
|
LOW | AV:A/AC:L/Au:N/C:N/I:N/A:P |
6.5
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
Juniper Networks, Inc. | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2018-0063
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-0063
-
https://kb.juniper.net/JSA10899
Juniper Networks - 2018-10 Security Bulletin: Junos OS: Nexthop index allocation failed: private index space exhausted via incoming ARP requests to management interface (CVE-2018-0063)Vendor Advisory
-
http://www.securitytracker.com/id/1041861
Juniper Junos IP Next-Hop Index Database Bug Lets Remote Users Cause Denial of Service Conditions on the Target System - SecurityTrackerThird Party Advisory;VDB Entry
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