CLI traffic interception via disabled certificate validation
Published Jun 14, 2022 · Updated Aug 3, 2024
Improper certificate validation in Splunk Enterprise and Universal Forwarder before 9.0 allows attackers to intercept CLI connections. The CLI leaves cliVerifyServerName disabled by default and accepts a remote splunkd certificate without matching its identity. Exploitation requires a man-in-the-middle position and nondefault TLS certificates, exposing CLI traffic to reading or modification.
Summary
What happened
Improper certificate validation in Splunk Enterprise and Universal Forwarder before 9.0 allows attackers to intercept CLI connections. The CLI leaves cliVerifyServerName disabled by default and accepts a remote splunkd certificate without matching its identity. Exploitation requires a man-in-the-middle position and nondefault TLS certificates, exposing CLI traffic to reading or modification.
The record
- CVE
- CVE-2022-32156
- Published
- Jun 14, 2022
- Updated
- Aug 3, 2024
- Vendor
- Splunk, Inc.
- Product
- Splunk Enterprise
- Classifications
- CWE-295, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 14, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <9.0.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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