CVE-2019-7282 : Vulnerability Insights and Analysis

CVE-2019-7282 was published on January 31, 2019, and affects NetKit versions prior to 0.17. The vulnerability in the rcp client allowed remote rsh servers to manipulate access restrictions, potentially altering permissions on the client's directory. This vulnerability is reminiscent of CVE-2018-20685.

Understanding CVE-2019-7282

This CVE entry highlights a security issue in the rcp client of NetKit, impacting the integrity of access controls and permissions.

What is CVE-2019-7282?

In NetKit versions before 0.17, the rcp client's rcp.c file contained a vulnerability that could be exploited by remote rsh servers to bypass access restrictions. By using a file name of "." or leaving it empty, attackers could modify permissions on the client's directory.

The Impact of CVE-2019-7282

The vulnerability allowed unauthorized parties to alter directory permissions on the client's side, potentially leading to unauthorized access and data manipulation.

Technical Details of CVE-2019-7282

This section delves into the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability in the rcp client of NetKit prior to version 0.17 enabled remote rsh servers to circumvent access restrictions by manipulating file names, impacting directory permissions on the client's side.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Not applicable

Exploitation Mechanism

Attackers could exploit this vulnerability by utilizing a file name of "." or leaving it empty, allowing them to modify permissions on the target directory of the client.

Mitigation and Prevention

Protecting systems from CVE-2019-7282 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update NetKit to version 0.17 or newer to mitigate the vulnerability.
Implement network segmentation to limit the impact of potential unauthorized access.

Long-Term Security Practices

Regularly monitor and audit access controls and permissions on critical directories.
Educate users on secure file transfer practices to prevent unauthorized manipulation.

Patching and Updates

Stay informed about security updates and patches for NetKit to address vulnerabilities promptly.