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Junos OS: Unauthenticated remote root access possible when RSH service is enabled (Juniper Networks Junos OS)

CVE-2018-0052
HIGH 7.2

At a glance

Source
NVD
EPSS
EPSS 4.85 % · percentile 92 ()
State
PUBLISHED
Published
Updated
Assigner
juniper
NVD status
Modified

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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.

Weaknesses (CWE)

  • CWE-287 — Improper Authentication

References

Scores

VersionScoreVectorScored by
CVSS 3.0HIGH 7.2CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hjuniper
CVSS 3.0HIGH 7.2CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HNVD · sirt@juniper.net (Secondary)
CVSS 3.0HIGH 8.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)
CVSS 2.0HIGH 9.3AV:N/AC:M/Au:N/C:C/I:C/A:CNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Juniper Networks · Junos OSaffected 12.1X46 < 12.1X46-D77 ; affected 12.3X48 < 12.3X48-D75 ; affected 15.1X49 < 15.1X49-D131, 15.1X49-D140
Juniper Networks · Junos OSaffected 12.3 < 12.3R12-S10 ; affected 15.1 < 15.1R4-S9, 15.1R6-S6, 15.1R7 ; affected 16.1 < 16.1R3-S9, 16.1R4-S9, 16.1R5-S4, 16.1R6-S4, 16.1R7 ; affected 16.2 < 16.2R2-S5 ; affected 17.1 < 17.1R1-S7, 17.1R2-S7, 17.1R3 ; affected 17.2 < 17.2R1-S6, 17.2R2-S4, 17.2R3
Juniper Networks · Junos OSaffected 14.1X53 < 14.1X53-D47
Juniper Networks · Junos OSaffected 15.1X53 < 15.1X53-D59
Juniper Networks · Junos OSaffected 15.1X53 < 15.1X53-D67
Juniper Networks · Junos OSaffected 15.1X53 < 15.1X53-D233
Juniper Networks · Junos OSaffected 15.1X53 < 15.1X53-D471, 15.1X53-D490

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD