CVE-2021-33900

StartTLS and SASL confidentiality protection bypass

Description

While investigating DIRSTUDIO-1219 it was noticed that configured StartTLS encryption was not applied when any SASL authentication mechanism (DIGEST-MD5, GSSAPI) was used. While investigating DIRSTUDIO-1220 it was noticed that any configured SASL confidentiality layer was not applied. This issue affects Apache Directory Studio version 2.0.0.v20210213-M16 and prior versions.

Remediation

Workaround:

  • This issue was fixed in 2.0.0.v20210717-M17. All users using SASL are recommended to upgrade to Apache Directory Studio 2.0.0.v20210717-M17.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.14%
Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Directory Studio
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread.html/rb1dbcc43a5b406e45d335343a1704f4233de613140a01929d102fdc9%40%3Cusers.directory.apache.org%3E mailing list vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-33900?
CVE-2021-33900 has been scored as a high severity vulnerability.
How to fix CVE-2021-33900?
As a workaround for remediating CVE-2021-33900: This issue was fixed in 2.0.0.v20210717-M17. All users using SASL are recommended to upgrade to Apache Directory Studio 2.0.0.v20210717-M17.
Is CVE-2021-33900 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-33900 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-2021-33900?
CVE-2021-33900 affects Apache Software Foundation Apache Directory Studio.
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