On QFX and PTX Series, receipt of a malformed packet for J-Flow sampling might crash the FPC (Flexible PIC Concentrator) process which causes all interfaces to go down. By continuously sending the offending packet, an attacker can repeatedly crash the FPC process causing a sustained Denial of Service (DoS). This issue affects both IPv4 and IPv6 packet processing. Affected releases are Juniper Networks Junos OS on QFX and PTX Series: 17.4 versions prior to 17.4R2-S1, 17.4R3; 18.1 versions prior to 18.1R3-S1; 18.2 versions prior to 18.2R1-S3, 18.2R2; 17.2X75 versions prior to 17.2X75-D91, 17.2X75-D100.
Fixes

Solution

The following software releases have been updated to resolve this specific issue: Junos OS 17.2X75-D91, 17.2X75-D100, 17.4R2-S1, 17.4R3, 18.1R3-S1, 18.2R1-S3, 18.2R2, 18.2X75-D5, 18.3R1, and all subsequent releases.


Workaround

Disable the functionality of learning of next-hop addresses: # set services flow-monitoring (version-ipfix | version9) template <template-name> nexthop-learning disable

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published:

Updated: 2024-09-17T02:37:25.894Z

Reserved: 2018-10-11T00:00:00

Link: CVE-2019-0014

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-01-15T21:29:01.387

Modified: 2024-11-21T04:16:03.133

Link: CVE-2019-0014

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.