title: HTTP Response Splitting via the ‘rest’ SPL Command
description: In Splunk Enterprise versions below 9.0.5, 8.2.11, and 8.1.14, and Splunk Cloud Platform versions below 9.0.2303.100, a low-privileged user can trigger an HTTP response splitting vulnerability with the ‘rest’ SPL command that lets them potentially access other REST endpoints in the system arbitrarily.
problem types: The software receives data from an upstream component, but does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers.
affected:
{
product: Splunk Enterprise
vendor: Splunk
versions:
version: 8.1, status: affected, versionType: custom, lessThan: 8.1.14
version: 8.2, status: affected, versionType: custom, lessThan: 8.2.11
version: 9.0, status: affected, versionType: custom, lessThan: 9.0.5
}
{
product: Splunk Cloud Platform
vendor: Splunk
versions:
version: -, status: affected, versionType: custom, lessThan: 9.0.2303.100
}
metrics:
cvssV3_1: [
vectorString: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
version: 3.1
baseScore: 7.2
baseSeverity: HIGH
]
format: CVSS
scenarios: GENERAL