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FreeBSD Security Advisory (FreeBSD-SA-04:01.mksnap_ffs.asc)

Information

Severity

Severity

Medium

Family

Family

FreeBSD Local Security Checks

CVSSv2 Base

CVSSv2 Base

4.6

CVSSv2 Vector

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

13 years ago

Modified

Modified

4 years ago

Share

Summary

The remote host is missing an update to the system as announced in the referenced advisory FreeBSD-SA-04:01.mksnap_ffs.asc

Insight

Insight

Mounted filesystems can have a variety of flags set on them. Some flags affect performance and reliability, while others enable or disable particular security-related features such as the ability to execute a binary stored on the filesystem or the use of access control lists to complement normal Unix file permissions. The mksnap_ffs(8) command creates a `snapshot' of a filesystem. A `snapshot' is a static representation of the state of the filesystem at a particular point in time. Snapshots have a variety of uses, but their primary purpose is to make it possible to run fsck(8) and dump(8) on live filesystems. The kernel interface for creating a snapshot of a filesystem is the same as that for changing the flags on that filesystem. Due to an oversight, the mksnap_ffs(8) command called that interface with only the snapshot flag set, causing all other flags to be reset to the default value.

Solution

Solution

Upgrade your system to the appropriate stable release or security branch dated after the correction date https://secure1.securityspace.com/smysecure/catid.html?in=FreeBSD-SA-04:01.mksnap_ffs.asc

Common Vulnerabilities and Exposures (CVE)

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1. Download Multipass

sudo snap install multipass

2. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

3. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash

1. If you don’t have it already, install Brew. Then, to install Multipass simply execute:

brew install --cask multipass

2. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

2. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash

1. Download the installer for Windows

Note: You need Windows 10 Pro/Enterprise/Education v 1803 or later, or any Windows 10 with VirtualBox

2. Ensure your network is private

Make sure your local network is designated as private, otherwise Windows prevents Multipass from starting.

3. Run the installer

You need to allow the installer to gain Administrator privileges.

4. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04

5. Log into the multipass instance

multipass shell mageni

6. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash