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CVE-2020-3447 : Vulnerability Insights and Analysis

Learn about CVE-2020-3447, an information disclosure vulnerability in Cisco Email Security Appliance and Content Security Management Appliance. Find out the impact, affected systems, and mitigation steps.

A vulnerability in the CLI of Cisco AsyncOS for Cisco Email Security Appliance (ESA) and Cisco AsyncOS for Cisco Content Security Management Appliance (SMA) could allow an authenticated, remote attacker to access sensitive information on an affected device.

Understanding CVE-2020-3447

This CVE involves an information disclosure vulnerability in Cisco Email Security Appliance and Cisco Content Security Management Appliance.

What is CVE-2020-3447?

The vulnerability allows a remote attacker with valid credentials to access specific log files on the affected device, potentially obtaining sensitive data, including user credentials.

The Impact of CVE-2020-3447

The vulnerability has a CVSS base score of 5.5, indicating a medium severity issue. If exploited, it could lead to unauthorized access to sensitive information.

Technical Details of CVE-2020-3447

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability is caused by excessive verbosity in certain log subscriptions, enabling attackers to access sensitive information on the affected devices.

Affected Systems and Versions

        Product: Cisco Email Security Appliance (ESA)
        Vendor: Cisco
        Versions: Not applicable (n/a)

Exploitation Mechanism

        Attack Complexity: Low
        Attack Vector: Network
        Privileges Required: Low
        User Interaction: Required
        Exploitation Scope: Unchanged
        The attacker needs valid credentials at the operator level or higher on the affected device to exploit the vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2020-3447 is crucial to maintaining security.

Immediate Steps to Take

        Monitor vendor updates and apply patches promptly.
        Restrict access to sensitive log files to authorized personnel only.

Long-Term Security Practices

        Regularly review and update access control policies.
        Conduct security training to raise awareness of social engineering tactics.

Patching and Updates

        Cisco has released security updates to address the vulnerability. Ensure timely installation of these patches to mitigate the risk of exploitation.

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