OpenSearch 1.3/2.7 racecondition in finegrained ACL leads to auth bypass
CVE-2023-31141 Published on May 8, 2023
OpenSearch issue with fine-grained access control during extremely rare race conditions
OpenSearch is open-source software suite for search, analytics, and observability applications. Prior to versions 1.3.10 and 2.7.0, there is an issue with the implementation of fine-grained access control rules (document-level security, field-level security and field masking) where they are not correctly applied to the queries during extremely rare race conditions potentially leading to incorrect access authorization. For this issue to be triggered, two concurrent requests need to land on the same instance exactly when query cache eviction happens, once every four hours. OpenSearch 1.3.10 and 2.7.0 contain a fix for this issue.
Vulnerability Analysis
CVE-2023-31141 can be exploited with network access, requires user interaction and a small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is an AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2023-31141 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2023-31141
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Affected Versions
opensearch-project security:- Version >= 1.0.0, < 1.3.10 is affected.
- Version >= 2.0.0, < 2.7.0 is affected.
Vulnerable Packages
The following package name and versions may be associated with CVE-2023-31141
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| maven | org.opensearch.plugin:opensearch-security | >= 1.0.0, < 1.3.10.0 | 1.3.10.0 |
| maven | org.opensearch.plugin:opensearch-security | >= 2.0.0, < 2.7.0.0 | 2.7.0.0 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.