A security issue has been reported in Samba, which can be exploited by malicious, local users to gain knowledge of sensitive information.
The winbindd daemon saves the machine trust account credentials to the world-readable winbind log files in clear text. This may expose the credentials, which can be used to impersonate the server in a domain and gain additional information.
Successful exploitation requires that log level is set to 5 or above.
The security issue has been reported in versions 3.0.21 through 3.0.21c.
Solution: Update to version 3.0.22 or apply patch.
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Subject: Samba Exposure of Machine Account Credentials
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