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             AUSCERT External Security Bulletin Redistribution

  JSA10930 - 2019-04 Security Bulletin: QFX5000 Series, EX4300, EX4600: A
         stack buffer overflow vulnerability in Packet Forwarding
               Engine manager (FXPC) process (CVE-2019-0008)
                               12 April 2019


        AusCERT Security Bulletin Summary

Product:           Juniper QFX5000
                   Juniper EX4300
                   Juniper EX4600
Publisher:         Juniper Networks
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-0008  

Original Bulletin: 

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2019-04 Security Bulletin: QFX5000 Series, EX4300, EX4600: A stack buffer overflow vulnerability in Packet Forwarding Engine manager (FXPC) process (CVE-2019-0008)

Article ID:   JSA10930

Last Updated: 11 Apr 2019

Version:      3.0

Product Affected:
This issue affects Junos OS 14.1X53, 15.1X53, 17.1, 17.2, 17.3, 17.4, 18.1,
18.2, 18.2X75, 18.3 on QFX5000 series, EX4300, EX4600.

A certain sequence of valid BGP or IPv6 BFD packets may trigger a stack based
buffer overflow in the Junos OS Packet Forwarding Engine manager (FXPC) process
on QFX5000 series, EX4300, EX4600 devices. This issue can result in a crash of
the fxpc daemon or may potentially lead to remote code execution.

Affected releases are Juniper Networks Junos OS on QFX5000 series, EX4300,
EX4600 are:

  o 14.1X53 versions prior to 14.1X53-D51;
  o 15.1X53 versions prior to 15.1X53-D235;
  o 17.1 versions prior to 17.1R3;
  o 17.2 versions prior to 17.2R3;
  o 17.3 versions prior to 17.3R3-S2;
  o 17.4 versions prior to 17.4R2-S1, 17.4R3;
  o 18.1 versions prior to 18.1R3-S1;
  o 18.2 versions prior to 18.2R2;
  o 18.2X75 versions prior to 18.2X75-D30;
  o 18.3 versions prior to 18.3R2.

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was seen during production usage.

This issue has been assigned CVE-2019-0008 .


The following software releases have been updated to resolve this specific
issue: 14.1X53-D51, 15.1X53-D235, 17.1R3, 17.2R3, 17.3R3-S2, 17.4R2-S1, 17.4R3,
18.1R3-S1, 18.2R2, 18.2X75-D30, 18.3R2, 18.4R1, and all subsequent releases.

This issue is being tracked as PR 1371400 which is 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 https://www.juniper.net
/support/downloads/ .

Modification History:

  o 2019-04-10: Initial Publication.
  o 2019-04-11: add 14.1X53-D51, remove 17.3R4, 18.1R4 from fixed releases.

Related Links:

  o KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin
    Publication Process.

  o KB16765: In which releases are vulnerabilities fixed

  o KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security

  o Report a Security Vulnerability - How to Contact the Juniper Networks
    Security Incident Response Team

CVSS Score:
9.8 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Risk Level:

Risk Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common
Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

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