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GoogleOSV:USN-4510-2HistorySep 17, 2020 - 12:31 p.m.
samba vulnerability
2020-09-1712:31:27
Google
osv.dev
21
samba
vulnerability
remote attacker
credentials
netlogon protocol
authentication
ubuntu 14.04 esm
USN-4510-1 fixed a vulnerability in Samba. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
Tom Tervoort discovered that the Netlogon protocol implemented by Samba
incorrectly handled the authentication scheme. A remote attacker could use
this issue to forge an authentication token and steal the credentials of
the domain admin.
This update fixes the issue by changing the “server schannel” setting to
default to “yes”, instead of “auto”, which will force a secure netlogon
channel. This may result in compatibility issues with older devices. A
future update may allow a finer-grained control over this setting.
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