title: SRX Series: Cryptographic weakness in SRX300 Series TPM Firmware
description: Version 4.40 of the TPM (Trusted Platform Module) firmware on Juniper Networks SRX300 Series has a weakness in generating cryptographic keys that may allow an attacker to decrypt sensitive information in SRX300 Series products. The TPM is used in the SRX300 Series to encrypt sensitive configuration data. While other products also ship with a TPM, no other products or platforms are affected by this vulnerability. Customers can confirm the version of TPM firmware via the 'show security tpm status' command. This issue was discovered by an external security researcher. No other Juniper Networks products or platforms are affected by this issue.
problem types: Inadequate Encryption Strength
affected:
{
platforms: SRX300 Series
product: Junos OS
vendor: Juniper Networks
versions:
status: affected, version: 15.1X49 prior to TPM firmware version 4.43
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: NONE
baseScore: 4.4
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: HIGH
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
version: 3.0
]
workarounds: There is no known workaround for this issue.