ESB-2019.0096 - [Juniper] Juniper EX, QFX and MX Series: Denial of service - Remote/unauthenticated 2019-01-11

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0096
    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)
                              11 January 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Juniper EX, QFX and MX Series
Publisher:         Juniper Networks
Operating System:  Juniper
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-0006  

Original Bulletin: 
   https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10906

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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)

[JSA10906]
	
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.

Problem:

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.

Solution:

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.

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:

2019-01-09: Initial Publication.
2019-01-10: minor update on the solution section
 
Related Links:

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

KB16765: In which releases are vulnerabilities fixed?

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

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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