title: Junos OS: Cross-Site Scripting (XSS) in J-Web
description: Insufficient Cross-Site Scripting (XSS) protection in J-Web may potentially allow a remote attacker to inject web script or HTML, hijack the target user's J-Web session and perform administrative actions on the Junos device as the targeted user. This issue affects Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S15; 12.3X48 versions prior to 12.3X48-D86, 12.3X48-D90 on SRX Series; 14.1X53 versions prior to 14.1X53-D51 on EX and QFX Series; 15.1F6 versions prior to 15.1F6-S13; 15.1 versions prior to 15.1R7-S5; 15.1X49 versions prior to 15.1X49-D181, 15.1X49-D190 on SRX Series; 15.1X53 versions prior to 15.1X53-D238 on QFX5200/QFX5110 Series; 15.1X53 versions prior to 15.1X53-D592 on EX2300/EX3400 Series; 16.1 versions prior to 16.1R4-S13, 16.1R7-S5; 16.2 versions prior to 16.2R2-S10; 17.1 versions prior to 17.1R2-S11, 17.1R3-S1; 17.2 versions prior to 17.2R1-S9, 17.2R3-S2; 17.3 versions prior to 17.3R2-S5, 17.3R3-S5; 17.4 versions prior to 17.4R2-S6, 17.4R3; 18.1 versions prior to 18.1R3-S7; 18.2 versions prior to 18.2R2-S5, 18.2R3; 18.3 versions prior to 18.3R1-S6, 18.3R2-S1, 18.3R3; 18.4 versions prior to 18.4R1-S5, 18.4R2; 19.1 versions prior to 19.1R1-S2, 19.1R2.
problem types: CWE-79 Cross-site Scripting (XSS)
affected:
{
product: Junos OS
vendor: Juniper Networks
versions:
status: affected, version: 17.2R2
lessThan: 12.3R12-S15, status: affected, version: 12.3, versionType: custom
lessThan: 15.1F6-S13, status: affected, version: 15.1F6, versionType: custom
lessThan: 15.1R7-S5, status: affected, version: 15.1, versionType: custom
lessThan: 16.1R4-S13, 16.1R7-S5, status: affected, version: 16.1, versionType: custom
lessThan: 16.2R2-S10, status: affected, version: 16.2, versionType: custom
lessThan: 17.1R2-S11, 17.1R3-S1, status: affected, version: 17.1, versionType: custom
lessThan: 17.2R1-S9, 17.2R3-S2, status: affected, version: 17.2, versionType: custom
lessThan: 17.3R2-S5, 17.3R3-S5, status: affected, version: 17.3, versionType: custom
lessThan: 17.4R2-S6, 17.4R3, status: affected, version: 17.4, versionType: custom
lessThan: 18.1R3-S7, status: affected, version: 18.1, versionType: custom
lessThan: 18.2R2-S5, 18.2R3, status: affected, version: 18.2, versionType: custom
lessThan: 18.3R1-S6, 18.3R2-S1, 18.3R3, status: affected, version: 18.3, versionType: custom
lessThan: 18.4R1-S5, 18.4R2, status: affected, version: 18.4, versionType: custom
lessThan: 19.1R1-S2, 19.1R2, status: affected, version: 19.1, versionType: custom
}
{
platforms: SRX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 12.3X48-D86, 12.3X48-D90, status: affected, version: 12.3X48, versionType: custom
lessThan: 15.1X49-D181, 15.1X49-D190, status: affected, version: 15.1X49, versionType: custom
}
{
platforms: EX and QFX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 14.1X53-D51, status: affected, version: 14.1X53, versionType: custom
}
{
platforms: QFX5200/QFX5110 Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1X53-D238, status: affected, version: 15.1X53, versionType: custom
}
{
platforms: EX2300/EX3400 Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1X53-D592, status: affected, version: 15.1X53, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
version: 3.1
]
solutions: The following software releases have been updated to resolve this specific issue: 12.3R12-S15, 12.3X48-D86, 12.3X48-D90, 14.1X53-D51, 15.1F6-S13,15.1R7-S5, 15.1X49-D181, 15.1X49-D190, 15.1X53-D238, 15.1X53-D592, 16.1R4-S13, 16.1R7-S5, 16.2R2-S10,17.1R2-S11, 17.1R3-S1, 17.2R1-S9, 17.2R3-S2, 17.3R2-S5, 17.3R3-S5, 17.4R2-S6, 17.4R3, 18.1R3-S7,18.2R2-S5, 18.2R3, 18.3R1-S6, 18.3R2-S1, 18.3R3, 18.4R1-S5, 18.4R2, 19.1R1-S2, 19.1R2, 19.2R1, and all subsequent releases.
workarounds: Access the J-Web service from trusted hosts which may not be compromised by cross-site scripting attacks, for example, deploying jump hosts with no internet access.
Alternatively, disable J-Web.