CVE-2018-12268 : Security Advisory and Response

Acccheck.pl in version 0.2.1 of acccheck has a vulnerability that allows for Command Injection when shell metacharacters are used in a username or password file, leading to injection into an smbclient command line.

Understanding CVE-2018-12268

This CVE involves a Command Injection vulnerability in acccheck.pl.

What is CVE-2018-12268?

CVE-2018-12268 is a vulnerability in acccheck.pl that enables Command Injection through the use of shell metacharacters in a username or password file.

The Impact of CVE-2018-12268

The vulnerability allows malicious actors to inject commands into an smbclient command line, potentially leading to unauthorized access or further exploitation of the system.

Technical Details of CVE-2018-12268

This section provides more technical insights into the CVE.

Vulnerability Description

Acccheck.pl in acccheck 0.2.1 allows Command Injection via shell metacharacters in a username or password file, as demonstrated by injection into an smbclient command line.

Affected Systems and Versions

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Vendor: n/a
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Exploitation Mechanism

The vulnerability occurs when shell metacharacters are utilized in a username or password file, enabling the injection of commands into an smbclient command line.

Mitigation and Prevention

Protecting systems from CVE-2018-12268 is crucial for maintaining security.

Immediate Steps to Take

Avoid using shell metacharacters in usernames or password files.
Regularly monitor and analyze smbclient command lines for any suspicious activity.

Long-Term Security Practices

Implement input validation to prevent unauthorized characters in usernames and passwords.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Update acccheck to a patched version that addresses the Command Injection vulnerability.