Git - Shell Command Injection Vulnerability
Summary
DLA-1120-1: git - security update. Affects git versions < 1:1.7.10.4-1+wheezy6. Fixed in 1:1.7.10.4-1+wheezy6. How to fix ↓
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Background
Git is a distributed version control system that allows multiple developers to collaborate on a project. It provides a set of commands to manage repositories, track changes, and merge code. The git-cvsserver subcommand of Git is used to interact with CVS repositories. However, it suffers from a shell command injection vulnerability due to unsafe use of the Perl backtick operator. This vulnerability can be exploited by an attacker to execute arbitrary commands on the system.
Vulnerability Detail
The git-cvsserver subcommand, reachable from the git-shell subcommand, is vulnerable to shell command injection. This means that an attacker can inject malicious commands into the git-cvsserver command, leading to the execution of arbitrary code on the system. The vulnerability arises from the improper use of the Perl backtick operator, which allows the execution of shell commands within the Git codebase. This issue can be exploited even if CVS support has not been configured, as long as the git-cvs package is installed. The impact of this vulnerability can range from unauthorized access to sensitive information to complete system compromise.
How To Fix
Minimum fixed version
1:1.7.10.4-1+wheezy6
This is the first release that contains the fix.
sudo apt-get install --only-upgrade gitTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. However, as a general best practice, it is recommended to follow secure coding practices and avoid executing shell commands based on user input without proper validation and sanitization.
Conclusion
The git-cvsserver subcommand of Git is vulnerable to shell command injection due to unsafe use of the Perl backtick operator. This can allow an attacker to execute arbitrary commands on the system, potentially leading to unauthorized access, data theft, or system compromise. It is important to upgrade the git package to the latest version to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for git →
FAQ
Git is a distributed version control system that allows multiple developers to collaborate on a project. It provides a set of commands to manage repositories, track changes, and merge code.
The git-cvsserver subcommand is used to interact with CVS repositories. It allows Git to communicate with CVS servers and perform operations such as cloning, fetching, and pushing code.
The shell command injection vulnerability in git-cvsserver arises from the unsafe use of the Perl backtick operator. This operator allows the execution of shell commands within the Git codebase, and if user input is not properly validated, it can lead to arbitrary code execution.
The impact of this vulnerability can range from unauthorized access to sensitive information to complete system compromise. An attacker can execute arbitrary commands on the system, potentially leading to data theft, unauthorized modifications, or disruption of services.
To fix this vulnerability, it is recommended to upgrade the git package to version 1.7.10.4-1+wheezy6 or later. This update includes a patch that addresses the shell command injection vulnerability. Regularly updating software packages is crucial to ensure the latest security patches are applied.
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