CVE-2023-50455 : What You Need to Know
Discover the impact of CVE-2023-50455, a security flaw in Zammad, allowing attackers to flood email addresses, leading to Denial of Service attacks. Learn mitigation steps here.
An issue was discovered in Zammad before 6.2.0 where a lack of rate limiting in the "email address verification" feature could lead to Denial of Service attacks by sending multiple requests for a known address.
Understanding CVE-2023-50455
This CVE identifies a vulnerability in Zammad that can be exploited to cause a Denial-of-Service condition by generating numerous emails, potentially spamming the victim.
What is CVE-2023-50455?
The CVE-2023-50455 highlights a security flaw in Zammad versions before 6.2.0, allowing attackers to flood known email addresses with requests, leading to a DoS attack.
The Impact of CVE-2023-50455
The impact of this vulnerability is the potential disruption of email services and the bombardment of emails to targeted email addresses.
Technical Details of CVE-2023-50455
The following details provide insights into the vulnerability affecting Zammad before version 6.2.0.
Vulnerability Description
The lack of rate limiting in the "email address verification" feature enables attackers to flood known email addresses with requests, causing the generation of numerous emails and potential spam activities.
Affected Systems and Versions
Vendor: Not Applicable Product: Not Applicable Version: Not Applicable Status: Affected
Exploitation Mechanism
Attackers exploit the absence of proper rate limiting controls in the "email address verification" to overwhelm targeted email addresses with multiple requests, leading to a Denial-of-Service condition.
Mitigation and Prevention
To safeguard systems from the CVE-2023-50455 vulnerability, immediate actions and long-term security practices are crucial.
Immediate Steps to Take
Implement rate limiting controls, update Zammad to version 6.2.0 or newer, and monitor email address verification requests for unusual activity.
Long-Term Security Practices
Regularly update the software, conduct security assessments, and educate users on best practices to mitigate future risks.
Patching and Updates
Stay informed about security patches released by Zammad, and promptly apply updates to prevent exploitation of vulnerabilities.