ESB-2019.1269 - Juniper QFX5000, EX4300, and EX4600: Multiple vulnerabilities 2019-04-12

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1269
  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

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        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: 
   http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10930

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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.
Problem:

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 .

Solution:

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).

Workaround:

There are no viable workarounds for this issue.

Implementation:
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
    Advisories

  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:
Critical

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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