title: Junos OS: Denial of Service in J-Web
description: A Denial of Service vulnerability in J-Web service may allow a remote unauthenticated user to cause Denial of Service which may prevent other users to authenticate or to perform J-Web operations. 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-D60 on SRX Series; 15.1 versions prior to 15.1R7; 15.1F6; 15.1X49 versions prior to 15.1X49-D120 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-D234 on QFX5200/QFX5110 Series; 15.1X53 versions prior to 15.1X53-D470, 15.1X53-D495 on NFX Series; 16.1 versions prior to 16.1R6; 16.2 versions prior to 16.2R2-S6, 16.2R3; 17.1 versions prior to 17.1R2-S6, 17.1R3; 17.2 versions prior to 17.2R3; 17.3 versions prior to 17.3R2. No other Juniper Networks products or platforms are affected by this issue.
problem types: Denial of Service
affected:
{
platforms: SRX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 12.1X46-D77, status: affected, version: 12.1X46, versionType: custom
lessThan: 12.3X48-D60, status: affected, version: 12.3X48, versionType: custom
lessThan: 15.1X49-D120, status: affected, version: 15.1X49, versionType: custom
}
{
product: Junos OS
vendor: Juniper Networks
versions:
status: affected, version: 15.1F6
lessThan: 12.3R12-S10, status: affected, version: 12.3, versionType: custom
lessThan: 15.1R7, status: affected, version: 15.1, versionType: custom
lessThan: 16.1R6, status: affected, version: 16.1, versionType: custom
lessThan: 16.2R2-S6, 16.2R3, status: affected, version: 16.2, versionType: custom
lessThan: 17.1R2-S6, 17.1R3, status: affected, version: 17.1, versionType: custom
lessThan: 17.2R3, status: affected, version: 17.2, versionType: custom
lessThan: 17.3R2, status: affected, version: 17.3, versionType: custom
}
{
platforms: EX2300/EX3400 Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1X53-D59, status: affected, version: 15.1X53, versionType: custom
}
{
platforms: QFX10K Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1X53-D67, status: affected, version: 15.1X53, versionType: custom
}
{
platforms: QFX5200/QFX5110 Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1X53-D234, status: affected, version: 15.1X53, versionType: custom
}
{
platforms: NFX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 15.1X53-D470, 15.1X53-D495, status: affected, version: 15.1X53, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 5.3
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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: 12.1X46-D77, 12.3R12-S10,12.3X48-D60, 15.1R7, 15.1X49-D120, 15.1X53-D234, 15.1X53-D470, 15.1X53-D495, 15.1X53-D59, 15.1X53-D67, 16.1R6, 16.2R2-S6, 16.2R3, 17.1R2-S6, 17.1R3, 17.2R3, 17.3R2, 17.4R1 and all subsequent releases.
workarounds: Limit access to J-Web from only trusted hosts, networks and administrators.