CVE-2019-0014: Junos OS: QFX and PTX Series: FPC process crashes after J-Flow processes a malformed packet
First published: Tue Jan 15 2019(Updated: )
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.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper JUNOS | =17.2x75-d102 | |
| Juniper JUNOS | =17.2x75-d50 | |
| Juniper JUNOS | =17.2x75-d70 | |
| Juniper JUNOS | =17.4 | |
| Juniper JUNOS | =17.4-r1 | |
| Juniper JUNOS | =17.4-r2 | |
| Juniper JUNOS | =18.2-r1 | |
| Juniper Ptx1000 | ||
| Juniper Ptx10002 | ||
| Juniper Ptx10008 | ||
| Juniper Ptx10016 | ||
| Juniper Ptx3000 | ||
| Juniper Ptx5000 | ||
| Juniper Qfx10002 | ||
| Juniper Qfx10008 | ||
| Juniper Qfx10016 | ||
| Juniper Qfx3500 | ||
| Juniper Qfx3600 | ||
| Juniper Qfx5100 | ||
| Juniper Qfx5110 | ||
| Juniper Qfx5120 | ||
| Juniper Qfx5200 | ||
| Juniper Qfx5210 |
Remedy
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.
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Frequently Asked Questions
What is the severity of CVE-2019-0014?
The severity of CVE-2019-0014 is considered high with a severity value of 7.5.
Which Juniper products are affected by CVE-2019-0014?
QFX and PTX Series running Juniper JUNOS versions 17.2x75-d102, 17.2x75-d50, 17.2x75-d70, 17.4, 17.4-r1, 17.4-r2, and 18.2-r1 are affected by CVE-2019-0014.
How can an attacker exploit CVE-2019-0014?
An attacker can exploit CVE-2019-0014 by continuously sending a malformed packet for J-Flow sampling, which can crash the FPC process and cause a Denial of Service (DoS) condition.
What is the impact of CVE-2019-0014?
The impact of CVE-2019-0014 is that it can crash the FPC process, causing all interfaces to go down and resulting in a sustained Denial of Service (DoS) condition.
Are Juniper QFX10002, QFX10008, QFX10016, QFX3500, QFX3600, QFX5100, QFX5110, QFX5120, QFX5200, QFX5210, PTX1000, PTX10002, PTX10008, PTX10016, PTX3000, and PTX5000 vulnerable to CVE-2019-0014?
No, Juniper QFX10002, QFX10008, QFX10016, QFX3500, QFX3600, QFX5100, QFX5110, QFX5120, QFX5200, QFX5210, PTX1000, PTX10002, PTX10008, PTX10016, PTX3000, and PTX5000 are not vulnerable to CVE-2019-0014.
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