On Juniper Networks EX and QFX Series, an authentication bypass vulnerability may allow a user connected to the console port to login as root without any password.
This issue might only occur in certain scenarios:
• At the first reboot after performing device factory reset using the command “request system zeroize”; or
• A temporary moment during the first reboot after the software upgrade when the device configured in Virtual Chassis mode.
This issue affects Juniper Networks Junos OS on EX and QFX Series:
14.1X53 versions prior to 14.1X53-D53;
15.1 versions prior to 15.1R7-S4;
15.1X53 versions prior to 15.1X53-D593;
16.1 versions prior to 16.1R7-S4;
17.1 versions prior to 17.1R2-S11, 17.1R3-S1;
17.2 versions prior to 17.2R3-S3;
17.3 versions prior to 17.3R2-S5, 17.3R3-S6;
17.4 versions prior to 17.4R2-S9, 17.4R3;
18.1 versions prior to 18.1R3-S8;
18.2 versions prior to 18.2R2;
18.3 versions prior to 18.3R1-S7, 18.3R2.
This issue does not affect Juniper Networks Junos OS 12.3.
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-2020-1618 .
The following software releases have been updated to resolve this specific issue: 14.1X53-D53, 15.1X53-D593, 15.1R7-S4, 16.1R7-S4, 17.1R2-S11, 17.1R3-S1, 17.2R3-S3, 17.3R2-S5, 17.3R3-S6, 17.4R2-S9, 17.4R3, 18.1R3-S8, 18.2R2, 18.3R1-S7, 18.3R2, 18.4R1, and all subsequent releases.
This issue is being tracked as 1378429 and 1368940 .
Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/ .
Limit physical access to the console port only to trusted administrators.
2020-04-08: Initial publication