CVE-2021-31559

S2S TcpToken authentication bypass

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.14%
Vendor Advisory splunk.com
Affected: Splunk Splunk Enterprise
Published at:
Updated at:

References

Link Tags
https://www.splunk.com/en_us/product-security/announcements/svd-2022-0503.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-31559?
CVE-2021-31559 has been scored as a high severity vulnerability.
How to fix CVE-2021-31559?
To fix CVE-2021-31559, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31559 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-31559 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-31559?
CVE-2021-31559 affects Splunk Splunk Enterprise.
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