CVE-2018-0052

Junos OS: Unauthenticated remote root access possible when RSH service is enabled

HIGH

7.2

CVSS Score

Published: October 10, 2018 at 06:00 PM UTC

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

8 products affected across 2 vendorsJunosQfx5200Qfx5110

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Severity

HIGH7.2

Exploit prediction

EPSS 5%

Description

If RSH service is enabled on Junos OS and if the PAM authentication is disabled, a remote unauthenticated attacker can obtain root access to the device. RSH service is disabled by default on Junos. There is no documented CLI command to enable this service. However, an undocumented CLI command allows a privileged Junos user to enable RSH service and disable PAM, and hence expose the system to unauthenticated root access. When RSH is enabled, the device is listing to RSH connections on port 514. This issue is not exploitable on platforms where Junos release is based on FreeBSD 10+. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D77 on SRX Series; 12.3 versions prior to 12.3R12-S10; 12.3X48 versions prior to 12.3X48-D75 on SRX Series; 14.1X53 versions prior to 14.1X53-D47 on QFX/EX Series; 15.1 versions prior to 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D131, 15.1X49-D140 on SRX Series; 15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400 Series; 15.1X53 versions prior to 15.1X53-D67 on QFX10K Series; 15.1X53 versions prior to 15.1X53-D233 on QFX5200/QFX5110 Series; 15.1X53 versions prior to 15.1X53-D471, 15.1X53-D490 on NFX Series; 16.1 versions prior to 16.1R3-S9, 16.1R4-S9, 16.1R5-S4, 16.1R6-S4, 16.1R7; 16.2 versions prior to 16.2R2-S5; 17.1 versions prior to 17.1R1-S7, 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S6, 17.2R2-S4, 17.2R3; 17.2X75 versions prior to 17.2X75-D110, 17.2X75-D91; 17.3 versions prior to 17.3R1-S4, 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.2X75 versions prior to 18.2X75-D5.

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-D7712.3 ≤ v < 12.3R12-S1012.3X48 ≤ v < 12.3X48-D7514.1X53 ≤ v < 14.1X53-D4715.1 ≤ v < 15.1R4-S9, 15.1R6-S6, 15.1R715.1X49 ≤ v < 15.1X49-D131, 15.1X49-D14015.1X53 ≤ v < 15.1X53-D23315.1X53 ≤ v < 15.1X53-D471, 15.1X53-D49015.1X53 ≤ v < 15.1X53-D5915.1X53 ≤ v < 15.1X53-D6716.1 ≤ v < 16.1R3-S9, 16.1R4-S9, 16.1R5-S4, 16.1R6-S4, 16.1R716.2 ≤ v < 16.2R2-S517.1 ≤ v < 17.1R1-S7, 17.1R2-S7, 17.1R317.2 ≤ v < 17.2R1-S6, 17.2R2-S4, 17.2R317.2X75 ≤ v < 17.2X75-D110, 17.2X75-D9117.3 ≤ v < 17.3R1-S4, 17.3R2-S2, 17.3R317.4 ≤ v < 17.4R1-S3, 17.4R218.2X75 ≤ v < 18.2X75-D512.1X4612.1x4612.1x46 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 12.3 12.3 r1 12.3 r11 12.3 r2 12.3 r3 12.3 r4 12.3 r5 12.3 r6 12.3 r7 12.3 r8 12.3 r9 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 12.3x48 d55 12.3x48 d60 12.3x48 d65 12.3x48 d70 14.1X5314.1x5314.1x53 d10 14.1x53 d121 14.1x53 d15 14.1x53 d16 14.1x53 d25 14.1x53 d26 14.1x53 d27 14.1x53 d30 14.1x53 d35 14.1x53 d40 14.1x53 d42 14.1x53 d43 14.1x53 d44 14.1x53 d45 14.1x53 d46 15.1 15.1 r1 15.1 r2 15.1 r3 15.1 r6-s6 15.1 r7 15.1X49 15.1X5315.1x4915.1x49 d10 15.1x49 d100 15.1x49 d110 15.1x49 d120 15.1x49 d140 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 d10 15.1x53 d20 15.1x53 d21 15.1x53 d210 15.1x53 d230 15.1x53 d231 15.1x53 d232 15.1x53 d30 15.1x53 d32 15.1x53 d33 15.1x53 d34 15.1x53 d40 15.1x53 d45 15.1x53 d490 15.1x53 d50 15.1x53 d51 15.1x53 d52 15.1x53 d55 15.1x53 d57 15.1x53 d58 15.1x53 d60 15.1x53 d61 15.1x53 d62 15.1x53 d63 15.1x53 d64 15.1x53 d65 15.1x53 d66 16.1 16.1 r1 16.1 r2 16.1 r3 16.1 r4-s9 16.1 r5-s4 16.1 r6-s4 16.1 r7 16.2 16.2 r1 17.1 17.1 r2-s7 17.1 r3 17.2 17.2 r1 17.2 r2 17.2X7517.2x7517.2x75 d91 17.3 17.3 r2-s2 17.3 r3 17.4 17.4 r2 18.2X7518.2x75

Affected range stops below 12.1X46-D77, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.3R12-S10, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.3X48-D75, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1X53-D47, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1R4-S9, 15.1R6-S6, 15.1R7, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X49-D131, 15.1X49-D140, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D233, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D471, 15.1X53-D490, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D59, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D67, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.1R3-S9, 16.1R4-S9, 16.1R5-S4, 16.1R6-S4, 16.1R7, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.2R2-S5, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.1R1-S7, 17.1R2-S7, 17.1R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.2R1-S6, 17.2R2-S4, 17.2R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.2X75-D110, 17.2X75-D91, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.3R1-S4, 17.3R2-S2, 17.3R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.4R1-S3, 17.4R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2X75-D5, so it looks safe — our inference, not a vendor statement

juniper-ex2300 (environment) · juniper-ex3400 (environment) · juniper-nfx150 (environment) · juniper-nfx250 (environment) · juniper-qfx10000 (environment) · juniper-qfx5110 (environment) · juniper-qfx5200 (environment)

Ex2300 · Juniperdevice

80%

All versions

Ex3400 · Juniperdevice

80%

All versions

Nfx150 · Juniperdevice

80%

All versions

Nfx250 · Juniperdevice

80%

All versions