CVE-2018-18654 : Exploit Details and Defense Strategies

Crossroads 2.81 has a vulnerability that allows a local attacker to replace files with a Trojan horse in the /tmp directory.

Understanding CVE-2018-18654

This CVE describes a security issue in Crossroads 2.81 that enables a specific attack vector.

What is CVE-2018-18654?

The version 2.81 of Crossroads does not effectively manage the /tmp folder during the build process of xr, allowing a local attacker to replace files with a Trojan horse.

The Impact of CVE-2018-18654

The vulnerability permits a malicious user with local access to compromise the integrity of files within the /tmp directory by replacing them with a malicious payload.

Technical Details of CVE-2018-18654

Crossroads 2.81 vulnerability details and affected systems.

Vulnerability Description

The flaw in Crossroads 2.81 allows an attacker to create a writable subdirectory in /tmp, wait for xr to be copied there, and then replace files with a Trojan horse.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Version: N/A

Exploitation Mechanism

The attacker gains local access to the system, creates a subdirectory in /tmp, waits for xr to be copied, and then replaces files with a malicious payload.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2018-18654.

Immediate Steps to Take

Restrict access to the /tmp directory to authorized users only.
Regularly monitor file changes within the /tmp directory.

Long-Term Security Practices

Implement least privilege access controls to limit potential damage.
Conduct regular security audits and vulnerability assessments.

Patching and Updates

Apply patches or updates provided by the software vendor to address the vulnerability.