========================================================================== Ubuntu Security Notice USN-3976-4 May 27, 2019
samba vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 ESM Summary: USN-3976-1 introduced a regression in Samba. Software Description: - samba: SMB/CIFS file, print, and login server for Unix Details: USN-3976-1 fixed a vulnerability in Samba. The update introduced a regression causing Samba to occasionally crash. This update fixes the problem. Original advisory details: Isaac Boukris and Andrew Bartlett discovered that Samba incorrectly checked S4U2Self packets. In certain environments, a remote attacker could possibly use this issue to escalate privileges. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 ESM: samba 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3976-4 https://usn.ubuntu.com/usn/usn-3976-1 https://launchpad.net/bugs/1827924
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