title: Host Header Injection in Splunk Enterprise
description: In Splunk Enterprise versions below 8.1.12, 8.2.9, and 9.0.2, Splunk Enterprise fails to properly validate and escape the Host header, which could let a remote authenticated user conduct various attacks against the system, including cross-site scripting and cache poisoning.
problem types: CWE-20 Improper Input Validation
affected:
{
defaultStatus: affected
product: Splunk Enterprise
vendor: Splunk
versions:
lessThan: 8.1.12, status: affected, version: 8.1, versionType: custom
lessThan: 8.2.9, status: affected, version: 8.2, versionType: custom
lessThan: 9.0.2, status: affected, version: 9.0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 3
baseSeverity: LOW
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: HIGH
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL