CVE-2017-5930 : What You Need to Know

PostfixAdmin version prior to 3.0.2 is vulnerable to a security issue that allows authenticated remote domain administrators to delete protected aliases. This CVE was published on March 20, 2017.

Understanding CVE-2017-5930

PostfixAdmin's AliasHandler feature lacks proper permission checks, enabling unauthorized removal of protected aliases by authenticated remote domain administrators.

What is CVE-2017-5930?

The vulnerability in PostfixAdmin version before 3.0.2 allows authenticated remote domain administrators to delete protected aliases using the delete parameter in the delete.php script due to the absence of permission validation.

The Impact of CVE-2017-5930

This vulnerability could be exploited by malicious actors to delete protected aliases, potentially disrupting email services and compromising the integrity of email communications.

Technical Details of CVE-2017-5930

PostfixAdmin's security issue can be further understood through the following technical details:

Vulnerability Description

The AliasHandler component in PostfixAdmin before version 3.0.2 allows remote authenticated domain admins to delete protected aliases via the delete parameter to delete.php, involving a missing permission check.

Affected Systems and Versions

Product: PostfixAdmin
Vendor: N/A
Versions affected: All versions before 3.0.2

Exploitation Mechanism

The vulnerability is exploited by authenticated remote domain administrators using the delete parameter in the delete.php script to remove protected aliases without proper permission validation.

Mitigation and Prevention

To address CVE-2017-5930 and enhance security measures, the following steps are recommended:

Immediate Steps to Take

Upgrade PostfixAdmin to version 3.0.2 or later to mitigate the vulnerability.
Implement strict access controls and permission checks to prevent unauthorized deletion of aliases.

Long-Term Security Practices

Regularly monitor and audit user activities within PostfixAdmin to detect any suspicious behavior.
Educate domain administrators on secure practices and the importance of permission validation.

Patching and Updates

Stay informed about security updates and patches released by PostfixAdmin to address vulnerabilities promptly.