CVE-2021-24288 : Security Advisory and Response
Learn about CVE-2021-24288 impacting AcyMailing < 7.5.0, allowing attackers to craft malicious links. Discover mitigation steps and the importance of securing systems.
AcyMailing < 7.5.0 - Unauthenticated Open Redirect vulnerability allows an attacker to craft a malicious link to redirect victims.
Understanding CVE-2021-24288
This CVE involves an unauthenticated open redirect vulnerability in AcyMailing versions below 7.5.0. It enables attackers to create harmful links to trick users.
What is CVE-2021-24288?
AcyMailing < 7.5.0 - Unauthenticated Open Redirect allows threat actors to misuse the 'redirect' parameter during AcyMailing subscriptions, leading to potential attacks via crafted malicious links.
The Impact of CVE-2021-24288
The impact of this vulnerability is significant as it can be exploited to redirect users to malicious websites, phishing pages, or malware-infected content, posing a serious security risk.
Technical Details of CVE-2021-24288
This section dives into the technical aspects of the AcyMailing < 7.5.0 - Unauthenticated Open Redirect vulnerability.
Vulnerability Description
The flaw arises from inadequate sanitization of the 'redirect' parameter, allowing attackers to alter requests from POST to GET, facilitating the creation of harmful links.
Affected Systems and Versions
AcyMailing versions earlier than 7.5.0 are susceptible to this vulnerability, putting users of the SMTP Newsletter at risk of exploitation.
Exploitation Mechanism
By manipulating the 'redirect' parameter, threat actors can lure victims into clicking on seemingly legitimate links which can lead to dangerous websites.
Mitigation and Prevention
Protecting your systems from CVE-2021-24288 is crucial to maintaining security and safeguarding users against potential attacks.
Immediate Steps to Take
Ensure AcyMailing is updated to version 7.5.0 or above to patch the open redirect vulnerability and prevent exploitation.
Long-Term Security Practices
Regularly monitor for security updates, educate users about phishing tactics, and implement robust email security measures to enhance protection.
Patching and Updates
Stay informed about security advisories, promptly apply patches, and follow best practices for securing email communications to mitigate risks of similar vulnerabilities.