CVE-2021-41767

Private tunnel identifier may be included in the non-private details of active connections

Description

Apache Guacamole 1.3.0 and older may incorrectly include a private tunnel identifier in the non-private details of some REST responses. This may allow an authenticated user who already has permission to access a particular connection to read from or interact with another user's active use of that same connection.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.57%
Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Guacamole
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread/5l31k4jmzdsfz0xt8osrbl878gb3b7ro mailing list vendor advisory
http://www.openwall.com/lists/oss-security/2022/01/11/6 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-41767?
CVE-2021-41767 has been scored as a medium severity vulnerability.
How to fix CVE-2021-41767?
To fix CVE-2021-41767, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-41767 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-41767 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-41767?
CVE-2021-41767 affects Apache Software Foundation Apache Guacamole.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.