CVE-2021-3422: The lack of validation of a key-value field in the Splunk-to-Splunk protocol results in a denial-of-service in Splunk Enterprise instances configured to index…

PriorityP341high7.5CVSS 3.1

AVNACLPRNUINSUCNINAH

EPSS

0.58%

43.2th percentile

The lack of validation of a key-value field in the Splunk-to-Splunk protocol results in a denial-of-service in Splunk Enterprise instances configured to index Universal Forwarder traffic. The vulnerability impacts Splunk Enterprise versions before 7.3.9, 8.0 versions before 8.0.9, and 8.1 versions before 8.1.3. It does not impact Universal Forwarders. When Splunk forwarding is secured using TLS or a Token, the attack requires compromising the certificate or token, or both. Implementation of either or both reduces the severity to Medium.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
splunk	splunk	< 7.3.9	7.3.9
splunk	splunk	>= 8.0 < 8.0.9	8.0.9
splunk	splunk	>= 8.1 < 8.1.3	8.1.3
splunk	splunk_enterprise	—	—
splunk	splunk_enterprise	—	—
splunk	splunk_enterprise	—	—
splunk	splunk_enterprise	—	—

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P

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