DEBIAN-CVE-2019-14870

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Source
https://security-tracker.debian.org/tracker/CVE-2019-14870
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-14870.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2019-14870
Upstream
Published
2019-12-10T23:15:10Z
Modified
2025-09-30T03:54:33Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegationnotallowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.

References

Affected packages

Debian:11

heimdal

Package

Name
heimdal
Purl
pkg:deb/debian/heimdal?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.7.0+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

samba

Package

Name
samba
Purl
pkg:deb/debian/samba?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.11.3+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12

heimdal

Package

Name
heimdal
Purl
pkg:deb/debian/heimdal?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.7.0+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

samba

Package

Name
samba
Purl
pkg:deb/debian/samba?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.11.3+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13

heimdal

Package

Name
heimdal
Purl
pkg:deb/debian/heimdal?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.7.0+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

samba

Package

Name
samba
Purl
pkg:deb/debian/samba?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.11.3+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14

heimdal

Package

Name
heimdal
Purl
pkg:deb/debian/heimdal?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.7.0+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

samba

Package

Name
samba
Purl
pkg:deb/debian/samba?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.11.3+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}