CVE-2019-14907
Published: 21 January 2020
All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with "log level = 3" (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange. In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless).
Priority
Status
Package | Release | Status |
---|---|---|
samba Launchpad, Ubuntu, Debian |
bionic |
Released
(2:4.7.6+dfsg~ubuntu-0ubuntu2.15)
|
disco |
Released
(2:4.10.0+dfsg-0ubuntu2.8)
|
|
eoan |
Released
(2:4.10.7+dfsg-0ubuntu2.4)
|
|
focal |
Released
(2:4.11.5+dfsg-1ubuntu1)
|
|
trusty |
Needed
|
|
hirsute |
Released
(2:4.11.5+dfsg-1ubuntu1)
|
|
groovy |
Released
(2:4.11.5+dfsg-1ubuntu1)
|
|
impish |
Released
(2:4.11.5+dfsg-1ubuntu1)
|
|
jammy |
Released
(2:4.11.5+dfsg-1ubuntu1)
|
|
kinetic |
Released
(2:4.11.5+dfsg-1ubuntu1)
|
|
lunar |
Released
(2:4.11.5+dfsg-1ubuntu1)
|
|
upstream |
Released
(4.11.5,4.10.12)
|
|
xenial |
Released
(2:4.3.11+dfsg-0ubuntu0.16.04.25)
|
|
mantic |
Released
(2:4.11.5+dfsg-1ubuntu1)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |