What’s Vulnerable › Vulnerabilities

CVE-2021-39236: Owners of the S3 tokens are not validated

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-11-19 · updated 2026-06-17
• Weakness: CWE-862

Description

In Apache Ozone before 1.2.0, Authenticated users with valid Ozone S3 credentials can create specific OM requests, impersonating any other user.

Affected products

• Apache Software Foundation Apache Ozone: before 1.2.0 — fixed in 1.2.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Ozone 1.2.0. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2021/11/19/7
• https://issues.apache.org/jira/browse/HDDS-4763
• https://mail-archives.apache.org/mod_mbox/ozone-dev/202111.mbox/%3C0fd74baa-88a0-39a2-8f3a-b982acb25d5a%40apache.org%3E
• http://www.openwall.com/lists/oss-security/2021/11/19/7
• https://issues.apache.org/jira/browse/HDDS-4763
• https://mail-archives.apache.org/mod_mbox/ozone-dev/202111.mbox/%3C0fd74baa-88a0-39a2-8f3a-b982acb25d5a%40apache.org%3E

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