USN-3829-1: Git vulnerabilities

27 November 2018

git vulnerabilities

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Git.

Software Description

  • git - fast, scalable, distributed revision control system

Details

It was discovered that Git incorrectly handled layers of tree objects. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-15298)

It was discovered that Git incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-19486)

Update instructions

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

Ubuntu 18.10
git - 1:2.19.1-1ubuntu1.1
Ubuntu 18.04 LTS
git - 1:2.17.1-1ubuntu0.4
Ubuntu 16.04 LTS
git - 1:2.7.4-0ubuntu1.6
Ubuntu 14.04 LTS
git - 1:1.9.1-1ubuntu0.10

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References