ESB-2019.0093 - [Juniper] Juniper vMX Series: Denial of service - Remote/unauthenticated - 2019-01-10


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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0093
2019-01 Security Bulletin: Junos OS: vMX series: Predictable IP ID sequence
                   numbers vulnerability (CVE-2019-0007)
                              10 January 2019

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

Product:           Juniper vMX Series
Publisher:         Juniper Networks
Operating System:  Juniper
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-0007  

Original Bulletin: 
   https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10903

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2019-01 Security Bulletin: Junos OS: vMX series: Predictable IP ID sequence 
numbers vulnerability (CVE-2019-0007)

[JSA10903]
	
Product Affected:

This issue affects Junos OS 15.1. 

Affected platforms: vMX Series.

Problem:

The vMX Series software uses a predictable IP ID Sequence Number. This leaves
the system as well as clients connecting through the device susceptible to a
family of attacks which rely on the use of predictable IP ID sequence numbers
as their base method of attack.

This issue was found during internal product security testing.

Affected releases are Juniper Networks Junos OS:

    15.1 versions prior to 15.1F5 on vMX Series.

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

This issue was found during internal product security testing or research.

This issue has been assigned CVE-2019-0007.

Solution:

The following software releases have been updated to resolve this specific 
issue: 15.1F5, and all subsequent releases.

This issue is being tracked as PR 1140895 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:

When used in whole, the following workaround methods may reduce the risk of 
information exfiltration from the customer environment, and reduce the chance 
of being subjected to, or propagating D/DoS attacks against other targets.

Deny incoming packets with invalid source addresses From reaching the device.

Utilize egress filtering to prevent invalid / spoofed packets from leaving 
your network(s).

Enable stateful firewall filters where possible.

Utilize SYN-based anti-flood protection mechanisms where possible to reduce or
avoid D/DoS attacks.

Implementation:

Software Releases, patches and updates are available at 
https://www.juniper.net/support/downloads/.

Modification History:

2019-01-09: Initial Publication.

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

CVE-2019-0007 at cve.mitre.org

CVSS Score:

9.3 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/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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