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Debian LTS: Security Advisory for libarchive (DLA-2987-1)

Information

Severity

Severity

Low

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

2.1

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

2 months ago

Modified

Modified

1 month ago

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Summary

The remote host is missing an update for the 'libarchive' package(s) announced via the DLA-2987-1 advisory.

Insight

Insight

Three issues have been found in libarchive, a multi-format archive and compression library. CVE-2021-31566 symbolic links incorrectly followed when changing modes, times, ACL and flags of a file while extracting an archive CVE-2021-23177 extracting a symlink with ACLs modifies ACLs of target CVE-2019-19221 out-of-bounds read because of an incorrect mbrtowc or mbtowc call

Affected Software

Affected Software

'libarchive' package(s) on Debian Linux.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

For Debian 9 stretch, these problems have been fixed in version 3.2.2-2+deb9u3. We recommend that you upgrade your libarchive packages.

Common Vulnerabilities and Exposures (CVE)

References

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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