CVE-2020-25721
Published: 9 November 2021
Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.
Notes
Author | Note |
---|---|
mdeslaur | Fixing this in Ubuntu 18.04 LTS would require substantial code backports. We will not be fixing this issue in Ubuntu 18.04 LTS. In environments where this is of concern, we recommend updating to a more recent Ubuntu version. |
Priority
Status
Package | Release | Status |
---|---|---|
samba Launchpad, Ubuntu, Debian |
bionic |
Ignored
(changes too intrusive)
|
focal |
Released
(2:4.13.14+dfsg-0ubuntu0.20.04.1)
|
|
hirsute |
Released
(2:4.13.14+dfsg-0ubuntu0.21.04.1)
|
|
impish |
Released
(2:4.13.14+dfsg-0ubuntu0.21.10.1)
|
|
jammy |
Released
(2:4.13.14+dfsg-0ubuntu1)
|
|
kinetic |
Released
(2:4.13.14+dfsg-0ubuntu1)
|
|
lunar |
Released
(2:4.13.14+dfsg-0ubuntu1)
|
|
upstream |
Released
(4.13.14)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 8.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |