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).
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
17
Affected Products
22
References
samba / samba
| - |
| fedoraproject | fedora | - | - |
| fedoraproject | fedora | - | - |
| redhat | storage | - | - |
| redhat | enterprise_linux | - | - |
| redhat | enterprise_linux | - | - |
| canonical | ubuntu_linux | - | - |
| canonical | ubuntu_linux | - | - |
| canonical | ubuntu_linux | - | - |
| canonical | ubuntu_linux | - | - |
| synology | directory_server | - | - |
| synology | router_manager | - | - |
| synology | skynas | - | - |
| synology | diskstation_manager | - | - |
| debian | debian_linux | - | - |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Exploitability
Impact