CVE-2021-3422
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductSplunk
PublishedMar 25, 2022
First seenMar 25, 2022
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- splunk splunk7.3.9, 8.0.9, 8.1.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| splunk splunk | v < 7.3.9, 8.0 ≤ v < 8.0.9, 8.1 ≤ v < 8.1.3 | 7.3.9, 8.0.9, 8.1.3 |
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