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ubuntu1604:1:1:4 [2017/05/02 00:15]
Piotr Kłoczewski utworzono
ubuntu1604:1:1:4 [2017/05/02 12:12]
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-====== 1.1.4 Ensure nosuid option set on /tmp partition (Scored) ====== 
-**Profile Applicability:​** \\  
-  ​ 
-<​note>​Level 1 - Server \\  
-Level 1 - Workstation</​note>​ 
- 
-**Description:​** \\  
-The ''​nosuid''​ mount option specifies that the filesystem cannot contain ''​setuid''​ files. \\ \\  
-**Rationale:​** \\  
-Since the ''/​tmp''​ filesystem is only intended for temporary file storage, set this option to ensure that users cannot create ''​setuid''​ files in ''/​tmp''​. \\ \\  
-**Audit:** \\  
-If a ''/​tmp''​ partition exists run the following command and verify that the ''​nosuid''​ option is set on ''/​tmp'':​ \\  
-<​Code:​bash>​ 
-# mount | grep /tmp  
-tmpfs on /tmp type tmpfs (rw,​nosuid,​nodev,​noexec,​relatime) 
-</​Code>​ 
-\\ 
-**Remediation:​** \\  
-Edit the ''/​etc/​fstab''​ file and add ''​nosuid''​ to the fourth field (mounting options) for the ''/​tmp''​ partition. See the ''​fstab(5)''​ manual page for more information. \\  
-Run the following command to remount ''/​tmp'': ​ 
-<​Code:​bash>​ 
-# mount -o remount,​nosuid /tmp 
-</​Code>​ 
-\\ \\ 
-**Notes:** \\  
-systemd includes the ''​tmp.mount''​ service which should be used instead of configuring ''/​etc/​fstab''​. Mounting options are configured in the ''​Options''​ setting in ''/​etc/​systemd/​system/​tmp.mount''​.