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2020-04 Security Bulletin: Junos OS: Privilege escalation vulnerability in dual REs, VC or HA cluster may allow unauthorized configuration change. (CVE-2020-1630)



Article ID: JSA11010 SECURITY_ADVISORIES Last Updated: 08 Apr 2020Version: 3.0
Product Affected:
This issue affects Junos OS 12.3, 12.3X48, 14.1X53, 15.1, 15.1X49, 16.1, 16.2, 17.1, 17.2, 17.2X75, 17.3, 17.4, 18.1, 18.2, 18.3, 18.4, 19.1, 19.2.

A privilege escalation vulnerability in Juniper Networks Junos OS devices configured with dual Routing Engines (RE), Virtual Chassis (VC) or high-availability cluster may allow a local authenticated low-privileged user with access to the shell to perform unauthorized configuration modification.

This issue does not affect Junos OS device with single RE or stand-alone configuration.

This issue affects Juniper Networks Junos OS

12.3 versions prior to 12.3R12-S14;

12.3X48 versions prior to 12.3X48-D86, 12.3X48-D90;

14.1X53 versions prior to 14.1X53-D51;

15.1 versions prior to 15.1R7-S6;

15.1X49 versions prior to 15.1X49-D181, 15.1X49-D190;

15.1X53 versions prior to 15.1X53-D592;

16.1 versions prior to 16.1R4-S13, 16.1R7-S6;

16.2 versions prior to 16.2R2-S10;

17.1 versions prior to 17.1R2-S11, 17.1R3-S1;

17.2 versions prior to 17.2R1-S9, 17.2R3-S3;

17.3 versions prior to 17.3R3-S6;

17.4 versions prior to 17.4R2-S6, 17.4R3;

18.1 versions prior to 18.1R3-S7;

18.2 versions prior to 18.2R2-S5, 18.2R3-S1;

18.2 versions prior to 18.2X75-D12, 18.2X75-D33, 18.2X75-D420, 18.2X75-D60, 18.2X75-D411;

18.3 versions prior to 18.3R1-S5, 18.3R2-S1, 18.3R3;

18.4 versions prior to 18.4R1-S4, 18.4R2-S1, 18.4R3;

19.1 versions prior to 19.1R1-S2, 19.1R2;

19.2 versions prior to 19.2R1-S1, 19.2R2.

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-2020-1630.


The following software releases have been updated to resolve this specific issue: 12.3R12-S14, 12.3X48-D86, 12.3X48-D90, 14.1X53-D51, 15.1R7-S6, 15.1X49-D181, 15.1X49-D190, 15.1X53-D592, 16.1R4-S13, 16.1R7-S6, 16.2R2-S10, 17.1R2-S11, 17.1R3-S1, 17.2R1-S9, 17.2R3-S3, 17.2X75-D110, 17.2X75-D44, 17.3R3-S6, 17.4R2-S6, 17.4R3, 18.1R3-S7, 18.2R2-S5, 18.2R3-S1, 18.2X75-D12, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D60, 18.3R1-S5, 18.3R1-S6, 18.3R2-S1, 18.3R2-S3, 18.3R3, 18.4R1-S4, 18.4R1-S5, 18.4R2-S1, 18.4R3, 19.1R1-S2, 19.1R2, 19.2R1-S1, 19.2R2, 19.3R1, and all subsequent releases.

This issue is being tracked as 1441795.


Disallow unprivileged authenticated users access to Junos shell.

Limit shell access to only trusted administrators.

Software Releases, patches and updates are available at
Modification History:
‚Äč2020-04-08: Initial publication
2020-04-08: Small correction in the description regarding 15.1X53.
CVSS Score:
5.0 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N)
Severity Level:
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."

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