Ubuntu Security Notice 3426-1 - Stefan Metzmacher discovered that Samba incorrectly enforced SMB signing in certain situations. A remote attacker could use this issue to perform a man in the middle attack. Stefan Metzmacher discovered that Samba incorrectly handled encryption across DFS redirects. A remote attacker could use this issue to perform a man in the middle attack. Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory when SMB1 is being used. A remote attacker could possibly use this issue to obtain server memory contents. Various other issues were also addressed.
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