title: CHANGING Inc. TSSServiSignAdapter Windows Versions - Improper Input Validation
description: WriteRegistry function in TSSServiSign component does not filter and verify users’ input, remote attackers can rewrite to the registry without permissions thus perform hijack attacks to execute arbitrary code.
problem types: CWE-20 Improper Input Validation
affected:
{
platforms: Windows
product: TSSServiSignAdapter
vendor: CHANGING Inc.
versions:
lessThanOrEqual: 1.0.20.0316, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.8
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
solutions: Update to version 1.0.21.0520