It was found that the Kerberos Key Distribution Center (KDC) delegation feature, Service for User (S4U), did not sufficiently protect the tickets it's providing from tempering. A malicious, authenticated service principal allowed to delegate could use this flaw to impersonate a non-forwardable user.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | samba | 2022-12-01 17:33 | ALAS-2022-1642 |
Amazon Linux 2023 | samba | 2023-02-17 20:44 | ALAS2023-2023-032 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
NVD | CVSSv3 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
NVD | CVSSv2 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |