title: Junos OS: A privilege escalation vulnerability exists where authenticated users with shell access can become root
description: An Improper Privilege Management vulnerability in a shell session of Juniper Networks Junos OS allows an authenticated unprivileged attacker to gain full control of the system. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D45 on SRX Series; 12.3X48 versions prior to 12.3X48-D20 on SRX Series; 12.3 versions prior to 12.3R11 on EX Series; 14.1X53 versions prior to 14.1X53-D30 on EX2200/VC, EX3200, EX3300/VC, EX4200, EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, QFX5100;; 15.1X49 versions prior to 15.1X49-D20 on SRX Series.
problem types: Improper Privilege Management.
affected:
{
platforms: SRX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 12.1X46-D45, status: affected, version: 12.1X46, versionType: custom
lessThan: 12.3X48-D20, status: affected, version: 12.3X48, versionType: custom
lessThan: 15.1X49-D20, status: affected, version: 15.1X49, versionType: custom
}
{
platforms: EX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 12.3R11, status: affected, version: 12.3, versionType: custom
}
{
platforms: EX2200/VC, EX3200, EX3300/VC, EX4200, EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, QFX5100
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 14.1X53-D30, status: affected, version: 14.1X53, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 7.8
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
version: 3.0
]
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: The following software releases have been updated to resolve this specific issue: Junos OS 12.1X46-D45, 12.3X48-D20, 12.3R11, 14.1X53-D30, 15.1X49-D20 and all subsequent releases.
workarounds: Disallow unprivileged authenticated users access to Junos shell.
Limit shell access to only trusted administrators.