Ubuntu 20.04: UBUNTU-2020-bdce6d4b9d High: Fix Security Vulnerability

The patch program applies diff files to originals. The diff command

is used to compare an original to a changed file. Diff lists the

changes made to the file. A person who has the original file can then

use the patch command with the diff file to add the changes to their

original file (patching the file).

Patch should be installed because it is a common way of upgrading

applications.

Security fix for CVE-2018-1000156

* Thu May 3 2018 Tim Waugh - 2.7.6-4

- Fixed CVE-2018-1000156 - Malicious patch files cause ed to execute arbitrary

commands.

[ 1 ] Bug #1564326 - CVE-2018-1000156 patch: Malicious patch files cause ed to execute arbitrary commands

https://bugzilla.redhat.com/show_bug.cgi?id=1564326

su -c 'dnf upgrade --advisory FEDORA-2018-ed8d7c62c9' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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