CVE-2018-0008

Junos OS: commit script may allow unauthenticated root login upon reboot

MEDIUM

6.2

CVSS Score

Published: January 10, 2018 at 10:00 PM UTC

Updated: June 17, 2026 at 01:29 AM UTC

40 products affected across 2 vendorsJunosSRX5600SRX5800

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Severity

MEDIUM6.2

Exploit prediction

EPSS 0.5%

Description

An unauthenticated root login may allow upon reboot when a commit script is used. A commit script allows a device administrator to execute certain instructions during commit, which is configured under the [system scripts commit] stanza. Certain commit scripts that work without a problem during normal commit may cause unexpected behavior upon reboot which can leave the system in a state where root CLI login is allowed without a password due to the system reverting to a "safe mode" authentication state. Lastly, only logging in physically to the console port as root, with no password, will work. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D71 on SRX; 12.3X48 versions prior to 12.3X48-D55 on SRX; 14.1 versions prior to 14.1R9; 14.1X53 versions prior to 14.1X53-D40 on QFX, EX; 14.2 versions prior to 14.2R7-S9, 14.2R8; 15.1 versions prior to 15.1F5-S7, 15.1F6-S8, 15.1R5-S6, 15.1R6; 15.1X49 versions prior to 15.1X49-D110 on SRX; 15.1X53 versions prior to 15.1X53-D232 on QFX5200/5110; 15.1X53 versions prior to 15.1X53-D49, 15.1X53-D470 on NFX; 15.1X53 versions prior to 15.1X53-D65 on QFX10K; 16.1 versions prior to 16.1R2. No other Juniper Networks products or platforms are affected by this issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

12.1X46 ≤ v < 12.1X46-D7112.3X48 ≤ v < 12.3X48-D5514.1 ≤ v < 14.1R914.1X53 ≤ v < 14.1X53-D4014.2 ≤ v < 14.2R7-S9, 14.2R815.1 ≤ v < 15.1F5-S7, 15.1F6-S8, 15.1R5-S6, 15.1R615.1X49 ≤ v < 15.1X49-D11015.1X53 ≤ v < 15.1X53-D23215.1X53 ≤ v < 15.1X53-D49, 15.1X53-D47015.1X53 ≤ v < 15.1X53-D6516.1 ≤ v < 16.1R212.1X4612.1x4612.1x46 d10 12.1x46 d15 12.1x46 d2012.1x46 d2512.1x46 d30 12.1x46 d35 12.1x46 d40 12.1x46 d45 12.1x46 d50 12.1x46 d55 12.1x46 d60 12.1x46 d65 12.3X4812.3x4812.3x48 d10 12.3x48 d15 12.3x48 d20 12.3x48 d25 12.3x48 d30 12.3x48 d35 12.3x48 d40 12.3x48 d45 12.3x48 d50 14.1 14.1 r1 14.1 r2 14.1 r3 14.1 r4 14.1 r5 14.1 r6 14.1 r7 14.1X5314.1x5314.1x53 d10 14.1x53 d15 14.1x53 d16 14.1x53 d25 14.1x53 d26 14.1x53 d27 14.1x53 d30 14.1x53 d35 14.2 14.2 r1 14.2 r2 14.2 r3 14.2 r4 14.2 r5 14.2 r6 14.2 r7 14.2 r8 15.1 15.1 a1 15.1 f1 15.1 f2 15.1 f2-s1 15.1 f2-s2 15.1 f2-s3 15.1 f2-s4 15.1 f3 15.1 f4 15.1 f5 15.1 f6-s8 15.1 r5-s6 15.1 r6 15.1X49 15.1X5315.1x4915.1x49 d10 15.1x49 d100 15.1x49 d20 15.1x49 d30 15.1x49 d35 15.1x49 d40 15.1x49 d45 15.1x49 d50 15.1x49 d55 15.1x49 d60 15.1x49 d65 15.1x49 d70 15.1x49 d75 15.1x49 d80 15.1x49 d9015.1x5315.1x53 d20 15.1x53 d21 15.1x53 d210 15.1x53 d230 15.1x53 d25 15.1x53 d30 15.1x53 d32 15.1x53 d33 15.1x53 d34 15.1x53 d470 15.1x53 d50 15.1x53 d51 15.1x53 d52 15.1x53 d55 15.1x53 d57 15.1x53 d60 15.1x53 d61 15.1x53 d62 15.1x53 d63 15.1x53 d64 15.1x53 d70 16.1 16.1 r1

Affected range stops below 12.1X46-D71, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.3X48-D55, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1R9, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1X53-D40, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.2R7-S9, 14.2R8, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1F5-S7, 15.1F6-S8, 15.1R5-S6, 15.1R6, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X49-D110, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D232, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D49, 15.1X53-D470, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D65, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.1R2, so it looks safe — our inference, not a vendor statement

juniper-ex2200 (environment) · juniper-ex2300 (environment) · juniper-ex3300 (environment) · juniper-ex3400 (environment) · juniper-ex4200 (environment) · juniper-ex4300 (environment) · juniper-ex4500 (environment) · juniper-ex4550 (environment) · juniper-ex4600 (environment) · juniper-ex6200 (environment) · juniper-ex8200 (environment) · juniper-ex9200 (environment) · juniper-nfx (environment) · juniper-qfx10000 (environment) · juniper-qfx3500 (environment) · juniper-qfx3600 (environment) · juniper-qfx5100 (environment) · juniper-qfx5110 (environment) · juniper-qfx5200 (environment) · juniper-srx100 (environment) · juniper-srx110 (environment) · juniper-srx1400 (environment) · juniper-srx1500 (environment) · juniper-srx210 (environment) · juniper-srx220 (environment) · juniper-srx240 (environment) · juniper-srx300 (environment) · juniper-srx320 (environment) · juniper-srx340 (environment) · juniper-srx3400 (environment) · juniper-srx345 (environment) · juniper-srx3600 (environment) · juniper-srx4100 (environment) · juniper-srx4200 (environment) · juniper-srx5400 (environment) · juniper-srx550 (environment) · juniper-srx5600 (environment) · juniper-srx5800 (environment) · juniper-srx650 (environment)

Ex2200 · Juniperdevice

80%

All versions

Ex2300 · Juniperdevice

80%

All versions

Ex3300 · Juniperdevice

80%

All versions

Ex3400 · Juniperdevice

80%

All versions