Support Support Downloads Knowledge Base Juniper Support Portal Community

Knowledge Base

Search our Knowledge Base sites to find answers to your questions.

Ask All Knowledge Base Sites All Knowledge Base Sites JunosE Defect (KA)Knowledge BaseSecurity AdvisoriesTechnical BulletinsTechnotes Sign in to display secure content and recently viewed articles

2019-01 Security Bulletin: Junos OS: EX, QFX and MX series: Packet Forwarding Engine manager (FXPC) process crashes due to a crafted HTTP packet in a Virtual Chassis configuration (CVE-2019-0006)



Article ID: JSA10906 SECURITY_ADVISORIES Last Updated: 22 Jan 2019Version: 3.0
Product Affected:
This issue affects Junos OS 14.1X53, 15.1, 15.1X53. Affected platforms: EX Virtual Chassis Platforms, MX Virtual Chassis Platforms, QFX Virtual Chassis Platforms.

A certain crafted HTTP packet can trigger an uninitialized function pointer deference vulnerability in the Packet Forwarding Engine manager (fxpc) on all EX, QFX and MX Series devices in a Virtual Chassis configuration. This issue can result in a crash of the fxpc daemon or may potentially lead to remote code execution.

This issue only occurs when the crafted packet it destined to the device.

Affected releases are Juniper Networks Junos OS:

  • 14.1X53 versions prior to 14.1X53-D47 on EX and QFX Virtual Chassis Platforms;
  • 15.1 versions prior to 15.1R7-S3 all Virtual Chassis Platforms
  • 15.1X53 versions prior to 15.1X53-D50 on EX and QFX Virtual Chassis Platforms.

Juniper SIRT is not aware of any malicious exploitation of this vulnerability. This issue was seen in a production network where a routine security scan was performed on the device.

This issue was seen during production usage.

This issue has been assigned CVE-2019-0006.


The following Junos OS releases have been updated to resolve this specific issue: 14.1X53-D47, 15.1R7-S3, 16.1R1 and all subsequent releases.
This issue is being tracked as PR 1351411 and 1166070 which are visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).


There are no viable workarounds for this issue.

Software Releases, patches and updates are available at

Modification History:
  • 2019-01-09: Initial Publication.
  • 2019-01-10: minor update on the solution section.
  • 2019-01-22: minor update on the solution section.


CVSS Score:
9.8 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Severity Level:
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

Related Links

Comment on this article > Affected Products Browse the Knowledge Base for more articles related to these product categories. Select a category to begin.

Getting Up and Running with Junos

Getting Up and Running with Junos Security Alerts and Vulnerabilities Product Alerts and Software Release Notices Problem Report (PR) Search Tool EOL Notices and Bulletins JTAC User Guide Customer Care User Guide Pathfinder SRX High Availability Configurator SRX VPN Configurator Training Courses and Videos End User Licence Agreement Global Search