CVE-2018-0140 : What You Need to Know

A vulnerability in the spam quarantine feature of Cisco Email Security Appliance and Cisco Content Security Management Appliance could allow a remote attacker to download messages from the spam quarantine by manipulating browser strings.

Understanding CVE-2018-0140

This CVE involves a flaw in the spam quarantine feature of the mentioned Cisco appliances, potentially enabling unauthorized access to quarantined messages.

What is CVE-2018-0140?

The vulnerability in Cisco Email Security Appliance and Cisco Content Security Management Appliance allows a remote attacker, authenticated within the system, to download messages from the spam quarantine by altering browser string information. The absence of verification for authenticated user accounts is the root cause of this issue.

The Impact of CVE-2018-0140

An authenticated remote attacker could access and download messages from the spam quarantine without proper authorization.
Exploitation of this vulnerability requires manipulation of browser strings, potentially leading to unauthorized access to sensitive information.

Technical Details of CVE-2018-0140

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The flaw in the spam quarantine feature allows authenticated attackers to download messages by modifying browser string information due to the lack of verification for user accounts.

Affected Systems and Versions

Product: Cisco Email Security Appliance and Cisco Content Security Management Appliance
Versions: Cisco Email Security Appliance and Cisco Content Security Management Appliance

Exploitation Mechanism

To exploit this vulnerability, an attacker needs to be authenticated within the system and manipulate browser strings to gain access to messages submitted by other users within the same company.

Mitigation and Prevention

Protecting systems from CVE-2018-0140 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches and updates provided by Cisco to address the vulnerability.
Monitor and restrict access to the spam quarantine feature to authorized personnel only.

Long-Term Security Practices

Regularly review and update security configurations to prevent unauthorized access to sensitive data.
Conduct security awareness training to educate users on safe browsing practices and potential threats.

Patching and Updates

Cisco has released patches to mitigate the vulnerability in the affected appliances.
Ensure timely installation of these patches to secure the systems against potential exploitation.