CVE-2021-39235

Access mode of block tokens are not enforced

Description

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.

Remediation

Workaround:

  • Upgrade to Apache Ozone release version 1.2.0

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.41%
Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Ozone
Published at:
Updated at:

References

Link Tags
https://mail-archives.apache.org/mod_mbox/ozone-dev/202111.mbox/%3C93f88246-4320-7423-0dac-ec7a07f47455%40apache.org%3E vendor advisory mailing list
http://www.openwall.com/lists/oss-security/2021/11/19/6 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-39235?
CVE-2021-39235 has been scored as a medium severity vulnerability.
How to fix CVE-2021-39235?
As a workaround for remediating CVE-2021-39235: Upgrade to Apache Ozone release version 1.2.0
Is CVE-2021-39235 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-39235 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39235?
CVE-2021-39235 affects Apache Software Foundation Apache Ozone.
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