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.
| Software | From | Fixed in |
|---|---|---|
| juniper / junos | 15.1-f7 | 15.1-f7.x |
| juniper / junos | 15.1-r3 | 15.1-r3.x |
| juniper / junos | 15.1-r6 | 15.1-r6.x |
| juniper / junos | 15.1-f4 | 15.1-f4.x |
| juniper / junos | 15.1-r4 | 15.1-r4.x |
| juniper / junos | 15.1-f6 | 15.1-f6.x |
| juniper / junos | 15.1-f2 | 15.1-f2.x |
| juniper / junos | 15.1-f3 | 15.1-f3.x |
| juniper / junos | 15.1-r2 | 15.1-r2.x |
| juniper / junos | 15.1-r5 | 15.1-r5.x |
| juniper / junos | 15.1-r1 | 15.1-r1.x |
| juniper / junos | 15.1-f5 | 15.1-f5.x |
| juniper / junos | 15.1x49-d50 | 15.1x49-d50.x |
| juniper / junos | 15.1x49-d30 | 15.1x49-d30.x |
| juniper / junos | 15.1x49-d70 | 15.1x49-d70.x |
| juniper / junos | 15.1x49-d80 | 15.1x49-d80.x |
| juniper / junos | 15.1x49-d110 | 15.1x49-d110.x |
| juniper / junos | 15.1x49-d60 | 15.1x49-d60.x |
| juniper / junos | 15.1x49-d100 | 15.1x49-d100.x |
| juniper / junos | 15.1x49-d35 | 15.1x49-d35.x |
| juniper / junos | 15.1x49-d45 | 15.1x49-d45.x |
| juniper / junos | 15.1x49-d75 | 15.1x49-d75.x |
| juniper / junos | 15.1x49-d65 | 15.1x49-d65.x |
| juniper / junos | 15.1x49-d90 | 15.1x49-d90.x |
| juniper / junos | 15.1x49-d40 | 15.1x49-d40.x |
| juniper / junos | 15.1x49-d20 | 15.1x49-d20.x |
| juniper / junos | 15.1x49-d10 | 15.1x49-d10.x |
| juniper / junos | 15.1x49-d120 | 15.1x49-d120.x |
| juniper / junos | 15.1x49-d130 | 15.1x49-d130.x |
| juniper / junos | 15.1x49-d150 | 15.1x49-d150.x |
| juniper / junos | 15.1x53-d10 | 15.1x53-d10.x |
| juniper / junos | 15.1x53-d40 | 15.1x53-d40.x |
| juniper / junos | 15.1x53-d62 | 15.1x53-d62.x |
| juniper / junos | 15.1x53-d20 | 15.1x53-d20.x |
| juniper / junos | 15.1x53-d30 | 15.1x53-d30.x |
| juniper / junos | 15.1x53-d33 | 15.1x53-d33.x |
| juniper / junos | 15.1x53-d25 | 15.1x53-d25.x |
| juniper / junos | 15.1x53-d63 | 15.1x53-d63.x |
| juniper / junos | 15.1x53-d32 | 15.1x53-d32.x |
| juniper / junos | 15.1x53-d34 | 15.1x53-d34.x |
| juniper / junos | 15.1x53-d210 | 15.1x53-d210.x |
| juniper / junos | 15.1x53-d21 | 15.1x53-d21.x |
| juniper / junos | 15.1x53-d60 | 15.1x53-d60.x |
| juniper / junos | 15.1x53-d45 | 15.1x53-d45.x |
| juniper / junos | 15.1x53-d61 | 15.1x53-d61.x |
| juniper / junos | 15.1x53-d230 | 15.1x53-d230.x |
| juniper / junos | 15.1x53-d231 | 15.1x53-d231.x |
| juniper / junos | 15.1x53-d232 | 15.1x53-d232.x |
| juniper / junos | 15.1x53-d233 | 15.1x53-d233.x |
| juniper / junos | 15.1x53-d56 | 15.1x53-d56.x |
| juniper / junos | 15.1x53-d495 | 15.1x53-d495.x |
| juniper / junos | 16.1-r1 | 16.1-r1.x |
| juniper / junos | 16.1-r4 | 16.1-r4.x |
| juniper / junos | 16.1-r3 | 16.1-r3.x |
| juniper / junos | 16.1-r5 | 16.1-r5.x |
| juniper / junos | 16.1-r2 | 16.1-r2.x |
| juniper / junos | 16.1-r6 | 16.1-r6.x |
| juniper / junos | 16.1-r7 | 16.1-r7.x |
| juniper / junos | 17.3-r1 | 17.3-r1.x |
| juniper / junos | 17.3-r2 | 17.3-r2.x |
| juniper / junos | 17.3-r3 | 17.3-r3.x |
| juniper / junos | 17.2-r1 | 17.2-r1.x |
| juniper / junos | 17.2-r2 | 17.2-r2.x |
| juniper / junos | 17.2-r3 | 17.2-r3.x |
| juniper / junos | 17.2-r1-s7 | 17.2-r1-s7.x |
| juniper / junos | 17.4-r1 | 17.4-r1.x |
| juniper / junos | 17.4-r2 | 17.4-r2.x |
| juniper / junos | 17.4-r1-s7 | 17.4-r1-s7.x |
| juniper / junos | 18.1-r1 | 18.1-r1.x |
| juniper / junos | 18.1-r2 | 18.1-r2.x |
| juniper / junos | 18.1-r3-s2 | 18.1-r3-s2.x |
| juniper / junos | 18.2-r1 | 18.2-r1.x |
| juniper / junos | 18.2-r1-s3 | 18.2-r1-s3.x |
| juniper / junos | 18.3-r1-s1 | 18.3-r1-s1.x |
| juniper / junos | 18.3-r1 | 18.3-r1.x |
| juniper / junos | 18.2x75 | 18.2x75.x |
| juniper / junos | 16.1x65-d30 | 16.1x65-d30.x |
| juniper / junos | 16.1x65-d35 | 16.1x65-d35.x |
| juniper / junos | 16.1x65-d40 | 16.1x65-d40.x |
| juniper / junos | 17.1-r1 | 17.1-r1.x |
| juniper / junos | 17.1-r2 | 17.1-r2.x |
| juniper / junos | 16.2-r2 | 16.2-r2.x |
| juniper / junos | 16.2-r1 | 16.2-r1.x |
| juniper / junos | 16.2-r2-s7 | 16.2-r2-s7.x |