CVE-2019-13524 : Exploit Details and Defense Strategies

GE PACSystems RX3i CPE100/115, CPE302/305/310/330/400/410, and CRU/320 versions prior to specified releases may be vulnerable to a denial-of-service attack due to improper input validation.

Understanding CVE-2019-13524

Versions earlier than R9.85 of GE PACSystems RX3i CPE100/115, versions earlier than R9.90 of CPE302/305/310/330/400/410, and all versions of CRU/320 (which are no longer supported) may be vulnerable to a denial-of-service attack.

What is CVE-2019-13524?

CVE-2019-13524 is a vulnerability in GE PACSystems RX3i CPE100/115, CPE302/305/310/330/400/410, and CRU/320 systems that allows an attacker to send manipulated packets, causing the module state to change to halt-mode, leading to a denial-of-service condition.

The Impact of CVE-2019-13524

Attackers can exploit the vulnerability to disrupt operations by forcing the module into halt-mode, requiring manual intervention to recover.

Technical Details of CVE-2019-13524

Versions affected, description of the vulnerability, and potential exploitation methods.

Vulnerability Description

The vulnerability arises from improper input validation, enabling attackers to manipulate packets and induce halt-mode, necessitating manual reboot for recovery.

Affected Systems and Versions

GE PACSystems RX3i CPE100/115: All versions prior to R9.85
CPE302/305/310/330/400/410: All versions prior to R9.90
CRU320: All versions (End of Life)

Exploitation Mechanism

Attackers send specially crafted packets to trigger halt-mode, causing denial-of-service until manual reboot.

Mitigation and Prevention

Steps to mitigate the vulnerability and prevent exploitation.

Immediate Steps to Take

Update affected systems to the recommended versions to eliminate the vulnerability.
Implement network segmentation to limit access and reduce attack surface.

Long-Term Security Practices

Regularly monitor network traffic for anomalies that may indicate exploitation attempts.
Train personnel on identifying suspicious activities and responding to security incidents.

Patching and Updates

Apply patches and updates provided by the vendor to address the vulnerability and enhance system security.