All samba versions 4.9.x prior to 4.9.18, 4.10.x prior to 4.10.12 and 4.11.x prior to 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).
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
fedoraproject fedora 30 |
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fedoraproject fedora 31 |
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samba samba |
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redhat enterprise linux 7.0 |
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redhat enterprise linux 8.0 |
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redhat storage 3.0 |
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canonical ubuntu linux 16.04 |
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canonical ubuntu linux 18.04 |
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canonical ubuntu linux 19.04 |
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canonical ubuntu linux 19.10 |
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synology skynas - |
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synology diskstation manager 6.2 |
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synology directory server - |
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synology router manager 1.2 |
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debian debian linux 9.0 |
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