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CRITICAL

Junos OS: Insufficient authentication for user login when a specific system configuration error occurs.

Published Jul 14, 2017

Description

A specific device configuration can result in a commit failure condition. When this occurs, a user is logged in without being prompted for a password while trying to login through console, ssh, ftp, telnet or su, etc., This issue relies upon a device configuration precondition to occur. Typically, device configurations are the result of a trusted administrative change to the system's running configuration. The following error messages may be seen when this failure occurs: mgd: error: commit failed: (statements constraint check failed) Warning: Commit failed, activating partial configuration. Warning: Edit the router configuration to fix these errors. If the administrative changes are not made that result in such a failure, then this issue is not seen. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS 12.3 prior to 12.3R10, 12.3R11; 12.3X48 prior to 12.3X48-D20; 13.2 prior to 13.2R8; 13.3 prior to 13.3R7; 14.1 prior to 14.1R4-S12, 14.1R5, 14.1R6; 14.1X53 prior to 14.1X53-D30; 14.2 prior to 14.2R4; 15.1 prior to 15.1F2, 15.1F3, 15.1R2.

Affected products

Remediation

Vendor solution

Make sure authentication works as expected after a system configuration change.

Use the SSH certificate based authentication.

Use access lists or firewall filters to limit access to the device only from trusted administrative hosts, networks and users.

Metrics

References (2)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner juniper
Published Jul 14, 2017
Updated Sep 16, 2024
Reserved Jun 28, 2017
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity n/a
Public date n/a