Support Support Downloads Knowledge Base Case Manager My Juniper 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

2020-10 Security Bulletin: Junos OS: NFX350: Password hashes stored in world-readable format (CVE-2020-1669)

0

0

Article ID: JSA11066 SECURITY_ADVISORIES Last Updated: 14 Oct 2020Version: 1.0
Product Affected:
This issue affects Junos OS 19.4, 20.1. Affected platforms: NFX350.
Problem:

The Juniper Device Manager (JDM) container, used by the disaggregated Junos OS architecture on Juniper Networks NFX350 Series devices, stores password hashes in the world-readable file /etc/passwd. This is not a security best current practice as it can allow an attacker with access to the local filesystem the ability to brute-force decrypt password hashes stored on the system.

This issue affects Juniper Networks Junos OS on NFX350:

  • 19.4 versions prior to 19.4R3;
  • 20.1 versions prior to 20.1R1-S4, 20.1R2.

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-2020-1669.
 

Solution:

Junos OS now stores local password hashes in the protected /etc/shadow file.

The following software releases have been updated to resolve this specific issue: Junos OS 19.4R3, 20.1R1-S4, 20.1R2, 20.2R1, and all subsequent releases.

This issue is being tracked as 1462556.
 

Workaround:

Use access lists or firewall filters to limit access to the device only from trusted hosts.

Limit shell access to only trusted system administrators.
 

Implementation:
Software releases or updates are available for download at https://www.juniper.net/support/downloads/.
 
Modification History:
2020-10-14: Initial Publication

CVSS Score:
6.3 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N)
Severity Level:
Medium
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