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CVE-2019-0035

Junos OS: 'set system ports console insecure' allows root password recovery on OAM volumes

Medium6.8EPSS 0.40%
Published
Updated
Reserved
Assigned by
juniper

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.

Scores

CVSS scores of CVE-2019-0035, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.0Medium6.8CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1Medium6.8CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.40% · top 65% of all CVEs (5 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • affected 15.1 – < 15.1F6-S12, 15.1R7-S3
    • affected 15.1X49 – < 15.1X49-D160
    • affected 15.1X53 – < 15.1X53-D236, 15.1X53-D496, 15.1X53-D68
    • affected 16.1 – < 16.1R3-S10, 16.1R6-S6, 16.1R7-S3
    • affected 16.1X65 – < 16.1X65-D49
    • affected 16.2 – < 16.2R2-S8
    • affected 17.1 – < 17.1R2-S10, 17.1R3
    • affected 17.2 – < 17.2R1-S8, 17.2R3-S1
    • affected 17.3 – < 17.3R3-S3
    • affected 17.4 – < 17.4R1-S6, 17.4R2-S2
    • affected 18.1 – < 18.1R2-S4, 18.1R3-S3
    • affected 18.2 – < 18.2R2
    • affected 18.2X75 – < 18.2X75-D40
    • affected 18.3 – < 18.3R1-S2
    • unaffected all – < 15.1

What to do

Solution: The following software releases have been updated to resolve this specific issue: Junos OS 15.1F6-S12, 15.1R7-S3, 15.1X49-D160, 15.1X53-D236, 15.1X53-D496, 15.1X53-D68, 16.1R3-S10, 16.1R6-S6, 16.1R7-S3, 16.1X65-D49, 16.2R2-S8, 17.1R2-S10, 17.1R3, 17.2R1-S8, 17.2R3-S1, 17.3R3-S3, 17.4R1-S6, 17.4R2-S2, 18.1R2-S4, 18.1R3-S3, 18.2R2, 18.2X75-D40, 18.3R1-S2, 18.4R1, and all subsequent releases.

Workaround: Limit physical access to the recovery console to only trusted administrators.

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

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .