A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.
The product dereferences a pointer that it expects to be valid but is NULL.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Samba | Samba | * | 4.13.12 (excluding) |
| Samba | Samba | 4.14.0 (including) | 4.14.8 (excluding) |
| Heimdal | Ubuntu | bionic | * |
| Heimdal | Ubuntu | esm-infra-legacy/trusty | * |
| Heimdal | Ubuntu | esm-infra/bionic | * |
| Heimdal | Ubuntu | esm-infra/focal | * |
| Heimdal | Ubuntu | esm-infra/xenial | * |
| Heimdal | Ubuntu | focal | * |
| Heimdal | Ubuntu | hirsute | * |
| Heimdal | Ubuntu | impish | * |
| Heimdal | Ubuntu | trusty | * |
| Heimdal | Ubuntu | trusty/esm | * |
| Heimdal | Ubuntu | upstream | * |
| Heimdal | Ubuntu | xenial | * |
| Samba | Ubuntu | bionic | * |
| Samba | Ubuntu | devel | * |
| Samba | Ubuntu | esm-infra-legacy/trusty | * |
| Samba | Ubuntu | esm-infra/bionic | * |
| Samba | Ubuntu | esm-infra/focal | * |
| Samba | Ubuntu | esm-infra/xenial | * |
| Samba | Ubuntu | focal | * |
| Samba | Ubuntu | hirsute | * |
| Samba | Ubuntu | impish | * |
| Samba | Ubuntu | jammy | * |
| Samba | Ubuntu | kinetic | * |
| Samba | Ubuntu | lunar | * |
| Samba | Ubuntu | mantic | * |
| Samba | Ubuntu | noble | * |
| Samba | Ubuntu | oracular | * |
| Samba | Ubuntu | plucky | * |
| Samba | Ubuntu | questing | * |
| Samba | Ubuntu | trusty | * |
| Samba | Ubuntu | trusty/esm | * |
| Samba | Ubuntu | upstream | * |
| Samba | Ubuntu | xenial | * |