title: SRX Series: Firewall bypass vulnerability when UUID with leading zeros is configured.
description: On Juniper Networks SRX series devices, firewall rules configured to match custom application UUIDs starting with zeros can match all TCP traffic. Due to this issue, traffic that should have been blocked by other rules is permitted to flow through the device resulting in a firewall bypass condition. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D71 on SRX series; 12.3X48 versions prior to 12.3X48-D55 on SRX series; 15.1X49 versions prior to 15.1X49-D100 on SRX series.
problem types: Firewall bypass vulnerability
affected:
{
platforms: SRX series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 12.1X46-D71, status: affected, version: 12.1X46, versionType: custom
lessThan: 12.3X48-D55, status: affected, version: 12.3X48, versionType: custom
lessThan: 15.1X49-D100, status: affected, version: 15.1X49, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.4
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/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: 12.1X46-D71, 12.3X48-D55, 15.1X49-D100, 17.3R1, and all subsequent releases.
workarounds: Do not use UUIDs starting with zeros in the configuration.