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Ubuntu Security Notice USN-3829-1
November 27, 2018

git vulnerabilities
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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

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

References:
  https://usn.ubuntu.com/usn/usn-3829-1
  CVE-2017-15298, CVE-2018-19486

Package Information:
  https://launchpad.net/ubuntu/+source/git/1:2.19.1-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/git/1:2.17.1-1ubuntu0.4
  https://launchpad.net/ubuntu/+source/git/1:2.7.4-0ubuntu1.6
  https://launchpad.net/ubuntu/+source/git/1:1.9.1-1ubuntu0.10—–BEGIN PGP SIGNATURE—–
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