ESB-2018.3685 - [Win][UNIX/Linux][Ubuntu] git: Multiple vulnerabilities 2018-11-28

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3685
                            Git vulnerabilities
                             28 November 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           git
Publisher:         Ubuntu
Operating System:  Ubuntu
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-19486 CVE-2017-15298 

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3829-1

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running git check for an updated version of the software for their 
         operating system.

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

  o CVE-2017-15298
  o CVE-2018-19486

(C) 2017 Canonical Ltd. Ubuntu and Canonical are registered trademarks of
Canonical Ltd.

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