CVE-2021-22134 Exposure of Sensitive Information to an Unauthorized Actor
Attackers can view existence of restricted documents and fields in Elasticsearch when Document or Field Level Security is enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-22134?
CVE-2021-22134 is a medium-severity vulnerability in Elastic Elasticsearch, published on 8 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A document disclosure flaw was found in Elasticsearch versions after 7.6.0 and before 7.11.0 when Document or Field Level Security is used. Get requests do not properly apply security permissions when executing a query against a recently updated document. This affects documents that have been updated and not yet refreshed in the index. This could result in the search disclosing the existence of documents and fields the attacker should not be able to view.
Which versions are affected by CVE-2021-22134?
3 open source packages ship an affected version, including org.elasticsearch:elasticsearch and elasticsearch. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
org.elasticsearch:elasticsearch Maven | From 7.6.0 | 7.11.0 |
org.elasticsearch:elasticsearch Maven | From 7.6.0 | 7.11.0 |
elasticsearch Bitnami | From 7.6.0 | 7.11.1 |
Products include Elastic Elasticsearch, Oracle Communications Cloud Native Core Automated Test Suite.
How do I fix CVE-2021-22134?
Upgrade org.elasticsearch:elasticsearch to 7.11.0 or later.
Is CVE-2021-22134 being exploited?
There is no known exploitation of CVE-2021-22134 in the wild and no public exploit code.
Other vulnerabilities in Elastic Elasticsearch
- CVE-2015-1427 Elasticsearch Groovy Scripting Engine Remote Code Execution
- CVE-2014-3120 Elasticsearch Remote Code Execution
- CVE-2015-5377 Code injection in n/a
- CVE-2026-72649 Deserialization of Untrusted Data in Elasticsearch Leading to Remote Code Execution
- CVE-2026-72642 Use of Out-of-range Pointer Offset in the Elasticsearch Machine Learning Native Inference Process
Sources
Also known as BIT-elasticsearch-2021-22134, GHSA-hwvv-438r-mhvj, UBUNTU-CVE-2021-22134.