CVE-2021-31559

High

Description

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductSplunk
PublishedMay 6, 2022
First seenMay 6, 2022
Weakness typeCWE-288CWE-288

How to fix

Update
  • splunk splunk8.1.5 or later

Affected products

ProductAffected versionsFixed in
splunk splunk8.1.0 ≤ v < 8.1.5, 8.2.08.1.5

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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