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Category:   Application (Generic)  >   Git Vendors:   kernel.org
Git 'git clone' Lets Remote Users Execute Arbitrary Code When Cloning to a Target System
SecurityTracker Alert ID:  1041811
SecurityTracker URL:  http://securitytracker.com/id/1041811
CVE Reference:   CVE-2018-17456   (Links to External Site)
Updated:  Oct 8 2018
Original Entry Date:  Oct 8 2018
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Git. A remote user can execute arbitrary code on the target system.

A user can create a specially crafted '.gitmodules' file in a project to be cloned with '--recurse-submodules'. When the target user subsequently issues a 'git clone --recurse-submodules' command, the target user's git command will pass the 'git clone' data from the URL as an object and execute the script.

joernchen reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (2.14.5, 2.15.3, 2.16.5, 2.17.2, 2.18.1, 2.19.1).

The vendor advisory is available at:

https://marc.info/?l=git&m=153875888916397&w=2

Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 12 2018 (Ubuntu Issues Fix) Git 'git clone' Lets Remote Users Execute Arbitrary Code When Cloning to a Target System
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 18.04 LTS.
Nov 12 2018 (Red Hat Issues Fix) Git 'git clone' Lets Remote Users Execute Arbitrary Code When Cloning to a Target System
Red Hat has issued a fix for Red Hat Enterprise Linux 6, 6.7, 7, 7.3, 7.4, and 7.5.
Nov 12 2018 (Oracle Issues Fix for Oracle Linux) Git 'git clone' Lets Remote Users Execute Arbitrary Code When Cloning to a Target System
Oracle has issued a fix for Oracle Linux 7.



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