CVE-2019-14870
published 2019-12-10CVE-2019-14870: 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…
medium5.4CVSS 3.1
AVNACLPRLUINSUCLILAN
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 delegation_not_allowed (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.
Affected
29 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | heimdal | < heimdal 7.7.0+dfsg-1 (bookworm) | heimdal 7.7.0+dfsg-1 (bookworm) |
| debian | samba | < heimdal 7.7.0+dfsg-1 (bookworm) | heimdal 7.7.0+dfsg-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| heimdal_project | heimdal | >= 0 < 7.7.0+dfsg-1 | 7.7.0+dfsg-1 |
| heimdal_project | heimdal | >= 0 < 7.7.0+dfsg-1 | 7.7.0+dfsg-1 |
| heimdal_project | heimdal | >= 0 < 7.7.0+dfsg-1 | 7.7.0+dfsg-1 |
| heimdal_project | heimdal | >= 0 < 7.7.0+dfsg-1 | 7.7.0+dfsg-1 |
| opensuse | leap | — | — |
| red_hat | samba | — | — |
| red_hat | samba | — | — |
| red_hat | samba | — | — |
| samba | samba | >= 0 < 2:4.11.3+dfsg-1 | 2:4.11.3+dfsg-1 |
| samba | samba | >= 0 < 2:4.11.3+dfsg-1 | 2:4.11.3+dfsg-1 |
| samba | samba | >= 0 < 2:4.11.3+dfsg-1 | 2:4.11.3+dfsg-1 |
| samba | samba | >= 0 < 2:4.11.3+dfsg-1 | 2:4.11.3+dfsg-1 |
| samba | samba | >= 0 < 2:4.3.11+dfsg-0ubuntu0.16.04.24 | 2:4.3.11+dfsg-0ubuntu0.16.04.24 |
| samba | samba | >= 0 < 2:4.7.6+dfsg~ubuntu-0ubuntu2.14 | 2:4.7.6+dfsg~ubuntu-0ubuntu2.14 |
CVSS provenance
nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
osv5.4MEDIUM