A Git security update is available for Ubuntu Linux 19.10, 18.04 LTS, and 16.04 LTS.

USN-4329-1: Git vulnerability

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Ubuntu Security Notice USN-4329-1
April 14, 2020

git vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Git could be made to expose sensitive information.

Software Description:
- git: fast, scalable, distributed revision control system

Details:

Felix Wilhelm discovered that Git incorrectly handled certain URLs that
included newlines. A remote attacker could possibly use this issue to trick
Git into returning credential information for a wrong host.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.10:
git 1:2.20.1-2ubuntu1.19.10.2

Ubuntu 18.04 LTS:
git 1:2.17.1-1ubuntu0.6

Ubuntu 16.04 LTS:
git 1:2.7.4-0ubuntu1.8

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4329-1
CVE-2020-5260

Package Information:
  https://launchpad.net/ubuntu/+source/git/1:2.20.1-2ubuntu1.19.10.2
  https://launchpad.net/ubuntu/+source/git/1:2.17.1-1ubuntu0.6
  https://launchpad.net/ubuntu/+source/git/1:2.7.4-0ubuntu1.8