CVE-2022-45141
Published: 16 December 2022
Since the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability was disclosed by Microsoft on Nov 8 2022 and per RFC8429 it is assumed that rc4-hmac is weak, Vulnerable Samba Active Directory DCs will issue rc4-hmac encrypted tickets despite the target server supporting better encryption (eg aes256-cts-hmac-sha1-96).
Notes
| Author | Note |
|---|---|
| mdeslaur | only affects 4.15.x and earlier The focal samba update was temporarily reverted by USN 5822-2 because it introduced regressions. It was later updated again with USN 5936-1. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
samba Launchpad, Ubuntu, Debian |
bionic |
Needed
|
| focal |
Released
(2:4.15.13+dfsg-0ubuntu0.20.04.1)
|
|
| jammy |
Released
(2:4.15.13+dfsg-0ubuntu1)
|
|
| kinetic |
Not vulnerable
(2:4.16.4+dfsg-2ubuntu1)
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(2:4.16.0+dfsg-2,4.15.13)
|
|
| xenial |
Needs triage
|
|
|
Patches: upstream: https://git.samba.org/?p=samba.git;a=commit;h=2be27ec1d7f3bfcdcac65bca1db53772535fe7bf (4.15) upstream: https://git.samba.org/?p=samba.git;a=commit;h=2ea3f2db8087e0a2c4a18c633b039c722cb6f829 (4.15) |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |