CVE-2021-31559: A crafted request bypasses S2S TCP Token authentication writing arbitrary events to an index in Splunk Enterprise Indexer 8.1 versions before 8.1.5 and 8.2…

PriorityP348high7.5CVSS 3.1

AVNACLPRNUINSUCNIHAN

EPSS

0.83%

53.0th percentile

A crafted request bypasses S2S TCP Token authentication writing arbitrary events to an index in Splunk Enterprise Indexer 8.1 versions before 8.1.5 and 8.2 versions before 8.2.1. The vulnerability impacts Indexers configured to use TCPTokens. It does not impact Universal Forwarders.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
splunk	splunk	—	—
splunk	splunk	>= 8.1.0 < 8.1.5	8.1.5
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:H/A:N

nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N

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