Authenticated code execution via collect payload file
Published Aug 30, 2023 · Updated Feb 28, 2025
Untrusted deserialization in affected Splunk Enterprise and Cloud releases allows remote authenticated users to execute arbitrary code via SPL. A crafted query invokes collect to write a file inside the installation, then submits that file as a serialized payload whose embedded code Splunk executes. A low-privileged Splunk Web account and enabled Splunk Web are required, and successful exploitation runs code with the Splunk process's privileges.
Summary
What happened
Untrusted deserialization in affected Splunk Enterprise and Cloud releases allows remote authenticated users to execute arbitrary code via SPL. A crafted query invokes collect to write a file inside the installation, then submits that file as a serialized payload whose embedded code Splunk executes. A low-privileged Splunk Web account and enabled Splunk Web are required, and successful exploitation runs code with the Splunk process's privileges.
The record
- CVE
- CVE-2023-40595
- Published
- Aug 30, 2023
- Updated
- Feb 28, 2025
- Vendor
- Splunk, Inc.
- Product
- Splunk Enterprise
- Classifications
- CWE-502, CAPEC-586, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 30, 2023CVE publishedPublication date reported by the CVE source.
- Feb 28, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=8.2 <8.2.12
- Affected versionversion=9.0 <9.0.6
- Affected versionversion=9.1 <9.1.1
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.
Weakness, pattern, technique
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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