CVE-2018-0061

Junos OS: Denial of service in telnetd

MEDIUM

5.3

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

MEDIUM5.3

Exploit prediction

EPSS 2%

Description

A denial of service vulnerability in the telnetd service on Junos OS allows remote unauthenticated users to cause high CPU usage which may affect system performance. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D81 on SRX Series; 12.3 versions prior to 12.3R12-S11; 12.3X48 versions prior to 12.3X48-D80 on SRX Series; 15.1 versions prior to 15.1R7; 15.1X49 versions prior to 15.1X49-D150, 15.1X49-D160 on SRX Series; 15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400 Series; 15.1X53 versions prior to 15.1X53-D68 on QFX10K Series; 15.1X53 versions prior to 15.1X53-D235 on QFX5200/QFX5110 Series; 15.1X53 versions prior to 15.1X53-D495 on NFX Series; 16.1 versions prior to 16.1R4-S12, 16.1R6-S6, 16.1R7; 16.2 versions prior to 16.2R2-S7, 16.2R3; 17.1 versions prior to 17.1R2-S9, 17.1R3; 17.2 versions prior to 17.2R2-S6, 17.2R3; 17.2X75 versions prior to 17.2X75-D100; 17.3 versions prior to 17.3R2-S4, 17.3R3; 17.4 versions prior to 17.4R1-S5, 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-D8112.3 ≤ v < 12.3R12-S1112.3X48 ≤ v < 12.3X48-D8015.1 ≤ v < 15.1R715.1X49 ≤ v < 15.1X49-D150, 15.1X49-D16015.1X53 ≤ v < 15.1X53-D23515.1X53 ≤ v < 15.1X53-D49515.1X53 ≤ v < 15.1X53-D5915.1X53 ≤ v < 15.1X53-D6816.1 ≤ v < 16.1R4-S12, 16.1R6-S6, 16.1R716.2 ≤ v < 16.2R2-S7, 16.2R317.1 ≤ v < 17.1R2-S9, 17.1R317.2 ≤ v < 17.2R2-S6, 17.2R317.2X75 ≤ v < 17.2X75-D10017.3 ≤ v < 17.3R2-S4, 17.3R317.4 ≤ v < 17.4R1-S5, 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 12.3x48 d75 15.1 15.1 f2 15.1 f3 15.1 f4 15.1 f5 15.1 f6 15.1 f7 15.1 r1 15.1 r2 15.1 r3 15.1 r6 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 16.1 r5 16.2 16.2 r1 17.1 17.1 r1 17.2 17.2 r1 17.2X7517.2x7517.2x75 d50 17.2x75 d90 17.3 17.3 r1 17.4 18.2X7518.2x75

Affected range stops below 12.1X46-D81, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.3R12-S11, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.3X48-D80, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1R7, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X49-D150, 15.1X49-D160, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D235, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D495, 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-D68, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.1R4-S12, 16.1R6-S6, 16.1R7, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.2R2-S7, 16.2R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.1R2-S9, 17.1R3, so it looks safe — our inference, not a vendor statement

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

Affected range stops below 17.2X75-D100, so it looks safe — our inference, not a vendor statement

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

Affected range stops below 17.4R1-S5, 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