CVE-2019-0035 Information

Description

When \set system ports console insecure\ is enabled root login is disallowed for Junos OS as expected. However the root password can be changed using \set system root-authentication plain-text-password\ on systems booted from an OAM (Operations Administration and Maintenance) volume leading to a possible administrative bypass with physical access to the console. OAM volumes (e.g. flash drives) are typically instantiated as /dev/gpt/oam or /oam for short. Password recovery changing the root password from a console should not have been allowed from an insecure console. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1F6-S12 15.1R7-S3; 15.1X49 versions prior to 15.1X49-D160; 15.1X53 versions prior to 15.1X53-D236 15.1X53-D496 15.1X53-D68; 16.1 versions prior to 16.1R3-S10 16.1R6-S6 16.1R7-S3; 16.1X65 versions prior to 16.1X65-D49; 16.2 versions prior to 16.2R2-S8; 17.1 versions prior to 17.1R2-S10 17.1R3; 17.2 versions prior to 17.2R1-S8 17.2R3-S1; 17.3 versions prior to 17.3R3-S3; 17.4 versions prior to 17.4R1-S6 17.4R2-S2; 18.1 versions prior to 18.1R2-S4 18.1R3-S3; 18.2 versions prior to 18.2R2; 18.2X75 versions prior to 18.2X75-D40; 18.3 versions prior to 18.3R1-S2. This issue does not affect Junos OS releases prior to 15.1.

CVSS Vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://kb.juniper.net/JSA10924

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

6.8