UBUNTU-CVE-2021-41767

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Source
https://ubuntu.com/security/CVE-2021-41767
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-41767.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-41767
Upstream
Published
2022-01-11T22:15:00Z
Modified
2025-09-08T16:47:22Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:16.04:LTS / guacamole-server

Package

Name
guacamole-server
Purl
pkg:deb/ubuntu/guacamole-server@0.8.3-2?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.8.3-1build2
0.8.3-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.8.3-2",
            "binary_name": "guacd"
        },
        {
            "binary_version": "0.8.3-2",
            "binary_name": "libguac-client-rdp0"
        },
        {
            "binary_version": "0.8.3-2",
            "binary_name": "libguac-client-ssh0"
        },
        {
            "binary_version": "0.8.3-2",
            "binary_name": "libguac-client-vnc0"
        },
        {
            "binary_version": "0.8.3-2",
            "binary_name": "libguac-dev"
        },
        {
            "binary_version": "0.8.3-2",
            "binary_name": "libguac5"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / guacamole-server

Package

Name
guacamole-server
Purl
pkg:deb/ubuntu/guacamole-server@0.9.9-2build1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.9.9-2
0.9.9-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.9-2build1",
            "binary_name": "guacd"
        },
        {
            "binary_version": "0.9.9-2build1",
            "binary_name": "libguac-client-rdp0"
        },
        {
            "binary_version": "0.9.9-2build1",
            "binary_name": "libguac-client-ssh0"
        },
        {
            "binary_version": "0.9.9-2build1",
            "binary_name": "libguac-client-telnet0"
        },
        {
            "binary_version": "0.9.9-2build1",
            "binary_name": "libguac-client-vnc0"
        },
        {
            "binary_version": "0.9.9-2build1",
            "binary_name": "libguac-dev"
        },
        {
            "binary_version": "0.9.9-2build1",
            "binary_name": "libguac11"
        }
    ]
}

Ubuntu:22.04:LTS / guacamole-server

Package

Name
guacamole-server
Purl
pkg:deb/ubuntu/guacamole-server@1.3.0-1.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3.0-1
1.3.0-1build1
1.3.0-1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.3.0-1.1",
            "binary_name": "guacd"
        },
        {
            "binary_version": "1.3.0-1.1",
            "binary_name": "libguac-client-rdp0"
        },
        {
            "binary_version": "1.3.0-1.1",
            "binary_name": "libguac-client-ssh0"
        },
        {
            "binary_version": "1.3.0-1.1",
            "binary_name": "libguac-client-telnet0"
        },
        {
            "binary_version": "1.3.0-1.1",
            "binary_name": "libguac-client-vnc0"
        },
        {
            "binary_version": "1.3.0-1.1",
            "binary_name": "libguac-dev"
        },
        {
            "binary_version": "1.3.0-1.1",
            "binary_name": "libguac19"
        }
    ]
}

Ubuntu:24.04:LTS / guacamole-server

Package

Name
guacamole-server
Purl
pkg:deb/ubuntu/guacamole-server@1.3.0-1.3ubuntu1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3.0-1.1
1.3.0-1.3ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.3.0-1.3ubuntu1",
            "binary_name": "guacd"
        },
        {
            "binary_version": "1.3.0-1.3ubuntu1",
            "binary_name": "libguac-client-rdp0t64"
        },
        {
            "binary_version": "1.3.0-1.3ubuntu1",
            "binary_name": "libguac-client-ssh0t64"
        },
        {
            "binary_version": "1.3.0-1.3ubuntu1",
            "binary_name": "libguac-client-telnet0t64"
        },
        {
            "binary_version": "1.3.0-1.3ubuntu1",
            "binary_name": "libguac-client-vnc0t64"
        },
        {
            "binary_version": "1.3.0-1.3ubuntu1",
            "binary_name": "libguac-dev"
        },
        {
            "binary_version": "1.3.0-1.3ubuntu1",
            "binary_name": "libguac19t64"
        }
    ]
}