Ozone
CVE-2021-39235
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V13 - Configuration Permission assignment review
|
| Impact | CVSS score of 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could access resources due to misconfigured permissions by sending crafted requests to the affected application. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAI
In Apache Ozone before 1.2.0, Ozone Datanode doesn't check the access mode parameter of the block token. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Review and restrict file/resource permissions, apply principle of least privilege.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in maven
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Incorrect Permission Assignment (CWE-732), which allows attackers to access resources due to misconfigured permissions. In Apache Ozone before 1.2.0, Ozone Datanode doesn't check the access mode parameter of the block token. Authenticated users with valid READ block token can do any write operation on the same block. Affected products include: Apache Ozone. Version information: before 1.2.0.
Know when Ozone gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
In Apache Ozone before 1.2.0, Ozone Datanode doesn't check the access mode parameter of the block token. Authenticated users with valid READ block token can do any write operation on the same block.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)NVD
In Apache Ozone before 1.2.0, Authenticated users with valid Ozone S3 credentials can create specific OM requests, imper
In Apache Ozone versions prior to 1.2.0, Initially generated block tokens are persisted to the metadata database and can
An issue was discovered in the ozone crate through 2020-07-04 for Rust. Rated critical severity (CVSS 9.8), this vulnera
An issue was discovered in the ozone crate through 2020-07-04 for Rust. Rated critical severity (CVSS 9.8), this vulnera
In Apache Ozone versions prior to 1.2.0, Container related Datanode requests of Ozone Datanode were not properly authori
In Apache Ozone versions prior to 1.2.0, Various internal server-to-server RPC endpoints are available for connections,
In Apache Ozone versions prior to 1.2.0, certain admin related SCM commands can be executed by any authenticated users,
Improper authentication of an HTTP endpoint in the S3 Gateway of Apache Ozone 1.4.0 allows any authenticated Kerberos us
In Apache Ozone versions prior to 1.2.0, Authenticated users knowing the ID of an existing block can craft specific requ
In Apache Ozone before 1.2.0, Recon HTTP endpoints provide access to OM, SCM and Datanode metadata. Rated medium severit
GitHub PoC
Exploit-DB