UBUNTU-CVE-2026-76578

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Source
https://ubuntu.com/security/CVE-2026-76578
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-76578.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-76578
Upstream
  • CVE-2026-76578
Published
2026-09-07T13:20:00Z
Modified
2026-09-16T14:01:41Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in FreeIPA. The self-managed OTP token ACI does not require authentication and does not restrict which attributes may be added alongside the token entry. An unauthenticated LDAP client can exploit this, combined with a related flaw in the underlying directory server's ACI evaluation (tracked separately), to create an arbitrary attacker-controlled Kerberos principal and have it added to the administrators group. This allows a remote, unauthenticated attacker to obtain genuine FreeIPA administrator-group membership and perform administrative operations against the directory and, on SID-enabled deployments, other IdM services.

References

Affected packages

Ubuntu:18.04:LTS
freeipa

Package

Name
freeipa
Purl
pkg:deb/ubuntu/freeipa?arch=source&distro=bionic

Affected ranges

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

Affected versions

4.*
4.4.4-3ubuntu1
4.4.4-4
4.7.0~pre1+git20180411-2ubuntu1
4.7.0~pre1+git20180411-2ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "freeipa-admintools",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "freeipa-client",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "freeipa-common",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "freeipa-server",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "freeipa-server-dns",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "freeipa-server-trust-ad",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "freeipa-tests",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "python-ipaclient",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "python-ipalib",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "python-ipaserver",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        },
        {
            "binary_name":  "python-ipatests",
            "binary_version":  "4.7.0~pre1+git20180411-2ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-76578.json"
Ubuntu:20.04:LTS
freeipa

Package

Name
freeipa
Purl
pkg:deb/ubuntu/freeipa?arch=source&distro=focal

Affected ranges

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

Affected versions

4.*
4.8.1-2ubuntu1
4.8.3-1
4.8.6-1ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "freeipa-client",
            "binary_version":  "4.8.6-1ubuntu2"
        },
        {
            "binary_name":  "freeipa-client-samba",
            "binary_version":  "4.8.6-1ubuntu2"
        },
        {
            "binary_name":  "freeipa-common",
            "binary_version":  "4.8.6-1ubuntu2"
        },
        {
            "binary_name":  "python3-ipaclient",
            "binary_version":  "4.8.6-1ubuntu2"
        },
        {
            "binary_name":  "python3-ipalib",
            "binary_version":  "4.8.6-1ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-76578.json"
Ubuntu:22.04:LTS
freeipa

Package

Name
freeipa
Purl
pkg:deb/ubuntu/freeipa?arch=source&distro=jammy

Affected ranges

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

Affected versions

4.*
4.8.6-1ubuntu6
4.8.6-1ubuntu8
4.8.6-1ubuntu9
4.9.8-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "freeipa-client",
            "binary_version":  "4.9.8-1"
        },
        {
            "binary_name":  "freeipa-client-epn",
            "binary_version":  "4.9.8-1"
        },
        {
            "binary_name":  "freeipa-client-samba",
            "binary_version":  "4.9.8-1"
        },
        {
            "binary_name":  "freeipa-common",
            "binary_version":  "4.9.8-1"
        },
        {
            "binary_name":  "python3-ipaclient",
            "binary_version":  "4.9.8-1"
        },
        {
            "binary_name":  "python3-ipalib",
            "binary_version":  "4.9.8-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-76578.json"
Ubuntu:24.04:LTS
freeipa

Package

Name
freeipa
Purl
pkg:deb/ubuntu/freeipa?arch=source&distro=noble

Affected ranges

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

Affected versions

4.*
4.10.2-1
4.10.2-2
4.10.2-2ubuntu3
4.11.1-1
4.11.1-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "freeipa-client",
            "binary_version":  "4.11.1-2"
        },
        {
            "binary_name":  "freeipa-client-epn",
            "binary_version":  "4.11.1-2"
        },
        {
            "binary_name":  "freeipa-client-samba",
            "binary_version":  "4.11.1-2"
        },
        {
            "binary_name":  "freeipa-common",
            "binary_version":  "4.11.1-2"
        },
        {
            "binary_name":  "python3-ipaclient",
            "binary_version":  "4.11.1-2"
        },
        {
            "binary_name":  "python3-ipalib",
            "binary_version":  "4.11.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-76578.json"
Ubuntu:26.04:LTS
freeipa

Package

Name
freeipa
Purl
pkg:deb/ubuntu/freeipa?arch=source&distro=resolute

Affected ranges

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

Affected versions

4.*
4.12.4-1
4.12.4-2
4.13.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "freeipa-client",
            "binary_version":  "4.13.1-1"
        },
        {
            "binary_name":  "freeipa-client-epn",
            "binary_version":  "4.13.1-1"
        },
        {
            "binary_name":  "freeipa-client-samba",
            "binary_version":  "4.13.1-1"
        },
        {
            "binary_name":  "freeipa-common",
            "binary_version":  "4.13.1-1"
        },
        {
            "binary_name":  "python3-ipaclient",
            "binary_version":  "4.13.1-1"
        },
        {
            "binary_name":  "python3-ipalib",
            "binary_version":  "4.13.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-76578.json"
Ubuntu:Pro:14.04:LTS
freeipa

Package

Name
freeipa
Purl
pkg:deb/ubuntu/freeipa?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

3.*
3.2.1-0ubuntu1
3.3.4-0ubuntu1
3.3.4-0ubuntu2
3.3.4-0ubuntu3
3.3.4-0ubuntu3.1
3.3.4-0ubuntu3.1+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "freeipa-client",
            "binary_version":  "3.3.4-0ubuntu3.1+esm1"
        },
        {
            "binary_name":  "python-freeipa",
            "binary_version":  "3.3.4-0ubuntu3.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-76578.json"
Ubuntu:Pro:16.04:LTS
freeipa

Package

Name
freeipa
Purl
pkg:deb/ubuntu/freeipa?arch=source&distro=esm-apps%2Fxenial

Affected ranges

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

Affected versions

4.*
4.1.4-1
4.3.1-0ubuntu1
4.3.1-0ubuntu1+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "freeipa-admintools",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "freeipa-client",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "freeipa-common",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "freeipa-server",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "freeipa-server-dns",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "freeipa-server-trust-ad",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "freeipa-tests",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "python-ipaclient",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "python-ipalib",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "python-ipaserver",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        },
        {
            "binary_name":  "python-ipatests",
            "binary_version":  "4.3.1-0ubuntu1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-76578.json"