CVE-2018-0147 : Vulnerability Insights and Analysis

A vulnerability in Java deserialization process in Cisco Secure Access Control System (ACS) prior to version 5.8 patch 9 could allow unauthorized command execution by a remote attacker.

Understanding CVE-2018-0147

This CVE involves a critical vulnerability in the Java deserialization process of Cisco Secure Access Control System (ACS) that could lead to unauthorized command execution.

What is CVE-2018-0147?

The vulnerability allows an unauthenticated attacker to execute unauthorized commands on a Cisco Secure Access Control System device running a version prior to 5.8 patch 9. The flaw arises from insecure processing of externally provided content.

The Impact of CVE-2018-0147

If successfully exploited, the vulnerability grants the attacker root privileges, enabling arbitrary command execution on the affected device.

Technical Details of CVE-2018-0147

The technical details shed light on the specific aspects of the vulnerability.

Vulnerability Description

The vulnerability in Java deserialization in Cisco Secure Access Control System (ACS) allows remote attackers to execute arbitrary commands by sending a crafted serialized Java object.

Affected Systems and Versions

Product: Cisco Secure Access Control System
Versions: All versions prior to 5.8 patch 9

Exploitation Mechanism

To exploit the vulnerability, an attacker needs to send a specifically crafted serialized Java object, which, when processed by the affected software, grants root privileges for arbitrary command execution.

Mitigation and Prevention

Protecting systems from CVE-2018-0147 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the necessary patch or update to version 5.8 patch 9 or later to mitigate the vulnerability.
Monitor network traffic for any signs of exploitation attempts.

Long-Term Security Practices

Implement network segmentation to limit the impact of potential attacks.
Regularly update and patch software to address known vulnerabilities.

Patching and Updates

Cisco has released patches to address the vulnerability. Ensure timely application of these patches to secure the system.