Protected-document discovery via cross-cluster permission loss
Published May 13, 2021 · Updated Aug 3, 2024
Information disclosure in Elastic Elasticsearch before 6.8.15 and 7.11.2 allows remote authenticated users to infer protected documents. Certain cross-cluster search queries fail to preserve Document or Field Level Security permissions, revealing whether inaccessible documents exist. Exploitation requires low-privilege access, user interaction, and Document or Field Level Security; protected document contents remain unreadable.
Summary
What happened
Information disclosure in Elastic Elasticsearch before 6.8.15 and 7.11.2 allows remote authenticated users to infer protected documents. Certain cross-cluster search queries fail to preserve Document or Field Level Security permissions, revealing whether inaccessible documents exist. Exploitation requires low-privilege access, user interaction, and Document or Field Level Security; protected document contents remain unreadable.
The record
- CVE
- CVE-2021-22137
- Published
- May 13, 2021
- Updated
- Aug 3, 2024
- Vendor
- Elastic
- Product
- Elasticsearch
- Classifications
- CWE-281, CWE-200
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 13, 2021CVE 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=before 7.11.2 and 6.8.15
What conditions does exploitation require?
What is affected?
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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