CVE-2018-0061: Junos OS: Denial of service in telnetd

Published Oct 10, 2018

Updated

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 Software

123 affected components

Juniper Junos=12.1x46

Juniper Junos=12.1x46-d10

Juniper Junos=12.1x46-d15

Juniper Junos=12.1x46-d20

Juniper Junos=12.1x46-d25

Juniper Junos=12.1x46-d30

Juniper Junos=12.1x46-d35

Juniper Junos=12.1x46-d40

Juniper Junos=12.1x46-d45

Juniper Junos=12.1x46-d50

Juniper Junos=12.1x46-d55

Juniper Junos=12.1x46-d60

Juniper Junos=12.1x46-d65

Juniper Junos=12.3

Juniper Junos=12.3-r1

Juniper Junos=12.3-r11

Juniper Junos=12.3-r2

Juniper Junos=12.3-r3

Juniper Junos=12.3-r4

Juniper Junos=12.3-r5

Juniper Junos=12.3-r6

Juniper Junos=12.3-r7

Juniper Junos=12.3-r8

Juniper Junos=12.3-r9

Juniper Junos=12.3x48

Juniper Junos=12.3x48-d10

Juniper Junos=12.3x48-d15

Juniper Junos=12.3x48-d20

Juniper Junos=12.3x48-d25

Juniper Junos=12.3x48-d30

Juniper Junos=12.3x48-d35

Juniper Junos=12.3x48-d40

Juniper Junos=12.3x48-d45

Juniper Junos=12.3x48-d50

Juniper Junos=12.3x48-d55

Juniper Junos=12.3x48-d60

Juniper Junos=12.3x48-d65

Juniper Junos=12.3x48-d70

Juniper Junos=12.3x48-d75

Juniper Junos=15.1

Juniper Junos=15.1-f2

Juniper Junos=15.1-f3

Juniper Junos=15.1-f4

Juniper Junos=15.1-f5

Juniper Junos=15.1-f6

Juniper Junos=15.1-f7

Juniper Junos=15.1-r1

Juniper Junos=15.1-r2

Juniper Junos=15.1-r3

Juniper Junos=15.1-r6

Juniper Junos=15.1x49

Juniper Junos=15.1x49-d10

Juniper Junos=15.1x49-d100

Juniper Junos=15.1x49-d110

Juniper Junos=15.1x49-d120

Juniper Junos=15.1x49-d140

Juniper Junos=15.1x49-d20

Juniper Junos=15.1x49-d30

Juniper Junos=15.1x49-d35

Juniper Junos=15.1x49-d40

Juniper Junos=15.1x49-d45

Juniper Junos=15.1x49-d50

Juniper Junos=15.1x49-d55

Juniper Junos=15.1x49-d60

Juniper Junos=15.1x49-d65

Juniper Junos=15.1x49-d70

Juniper Junos=15.1x49-d75

Juniper Junos=15.1x49-d80

Juniper Junos=15.1x49-d90

Juniper Junos=15.1x53

Juniper Junos=15.1x53-d50

Juniper Junos=15.1x53-d51

Juniper Junos=15.1x53-d52

Juniper Junos=15.1x53-d55

Juniper Junos=15.1x53-d57

Juniper Junos=15.1x53-d58

Juniper EX2300

Juniper EX3400

Juniper Junos=15.1x53-d10

Juniper Junos=15.1x53-d20

Juniper Junos=15.1x53-d21

Juniper Junos=15.1x53-d30

Juniper Junos=15.1x53-d32

Juniper Junos=15.1x53-d33

Juniper Junos=15.1x53-d34

Juniper Junos=15.1x53-d60

Juniper Junos=15.1x53-d61

Juniper Junos=15.1x53-d62

Juniper Junos=15.1x53-d63

Juniper Junos=15.1x53-d64

Juniper Junos=15.1x53-d65

Juniper Junos=15.1x53-d66

Juniper QFX10000

Juniper Junos=15.1x53-d210

Juniper Junos=15.1x53-d230

Juniper Junos=15.1x53-d231

Juniper Junos=15.1x53-d232

Juniper QFX5110

Juniper QFX5200

Juniper Junos=15.1x53-d40

Juniper Junos=15.1x53-d45

Juniper Junos=15.1x53-d490

Juniper NFX150

Juniper NFX250

Juniper Junos=16.1

Juniper Junos=16.1-r1

Juniper Junos=16.1-r2

Juniper Junos=16.1-r3

Juniper Junos=16.1-r4

Juniper Junos=16.1-r5

Juniper Junos=16.2

Juniper Junos=16.2-r1

Juniper Junos=17.1

Juniper Junos=17.1-r1

Juniper Junos=17.2

Juniper Junos=17.2-r1

Juniper Junos=17.2x75

Juniper Junos=17.2x75-d50

Juniper Junos=17.2x75-d90

Juniper Junos=17.3

Juniper Junos=17.3-r1

Juniper Junos=17.4

Juniper Junos=18.2x75

Remediation

Information

The following software releases have been updated to resolve this specific issue: 12.1X46-D81, 12.3R12-S11, 12.3R13, 12.3X48-D80, 15.1R7, 15.1X49-D150, 15.1X49-D160, 15.1X53-D235, 15.1X53-D495, 15.1X53-D59, 15.1X53-D68, 16.1R4-S12, 16.1R6-S6, 16.1R7, 16.2R2-S7, 16.2R3, 17.1R2-S9, 17.1R3, 17.2R2-S6, 17.2R3, 17.2X75-D100, 17.2X75-D110, 17.3R2-S4, 17.3R3, 17.4R1-S5, 17.4R2, 18.1R1, 18.1R2, 18.2R1, 18.2X75-D5, and all subsequent releases.

Event History

Oct 10, 2018

CVE Published

via MITRE·06:00 PM

Data Sourced

via MITRE·06:00 PM

RemedyDescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2018-0061?

CVE-2018-0061 has been classified as a medium severity vulnerability due to its potential to cause denial of service.

How do I fix CVE-2018-0061?

To fix CVE-2018-0061, update your Junos OS to a version that is not affected, specifically 12.1X46-D81 or later.

Which versions are affected by CVE-2018-0061?

CVE-2018-0061 affects Junos OS versions prior to 12.1X46-D81 and certain versions of 12.3 and others listed in the advisory.

What impact does CVE-2018-0061 have on my system?

CVE-2018-0061 may lead to high CPU usage, significantly affecting the performance of affected systems.

Who is affected by CVE-2018-0061?

Organizations using vulnerable versions of Juniper Networks' Junos OS on devices like SRX Series and certain others may be affected by CVE-2018-0061.