title: Junos OS: SRX Series: Deleted dynamic VPN users are allowed to establish VPN connections until reboot
description: A vulnerability in the SRX Series Service Gateway allows deleted dynamic VPN users to establish dynamic VPN connections until the device is rebooted. A deleted dynamic VPN connection should be immediately disallowed from establishing new VPN connections. Due to an error in token caching, deleted users are allowed to connect once a previously successful dynamic VPN connection has been established. A reboot is required to clear the cached authentication token. Affected releases are Junos OS on SRX Series: 12.3X48 versions prior to 12.3X48-D75; 15.1X49 versions prior to 15.1X49-D150; 17.3 versions prior to 17.3R3; 17.4 versions prior to 17.4R2; 18.1 versions prior to 18.1R3; 18.2 versions prior to 18.2R2.
problem types: Unauthorized access
affected:
{
platforms: SRX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 12.3X48-D75, status: affected, version: 12.3X48, versionType: custom
lessThan: 15.1X49-D150, status: affected, version: 15.1X49, versionType: custom
lessThan: 17.3R3, status: affected, version: 17.3, versionType: custom
lessThan: 17.4R2, status: affected, version: 17.4, versionType: custom
lessThan: 18.1R3, status: affected, version: 18.1, versionType: custom
lessThan: 18.2R2, status: affected, version: 18.2, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.4
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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 12.3X48-D75, 15.1X49-D150, 17.3R3, 17.4R2, 18.1R3, 18.2R2, 18.3R1, and all subsequent releases.
workarounds: There are no viable workarounds for this issue.