CVE-2020-28020 : What You Need to Know
Learn about CVE-2020-28020, an Exim 4 vulnerability allowing remote code execution. Find out how to mitigate the Integer Overflow to Buffer Overflow risk.
Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, enabling remote attackers to execute arbitrary code through mishandling of continuation lines during header-length restriction.
Understanding CVE-2020-28020
Exim vulnerability leading to potential remote code execution.
What is CVE-2020-28020?
- Exim 4 before 4.92 vulnerability allowing an unauthenticated remote attacker to execute arbitrary code.
The Impact of CVE-2020-28020
- Possibility of remote code execution due to Integer Overflow to Buffer Overflow in Exim 4.
Technical Details of CVE-2020-28020
Exim vulnerability details.
Vulnerability Description
- Integer Overflow to Buffer Overflow in Exim 4 before 4.92.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Version: n/a
Exploitation Mechanism
- Attackers can exploit the mishandling of continuation lines during header-length restriction.
Mitigation and Prevention
Protective measures against CVE-2020-28020.
Immediate Steps to Take
- Update Exim to version 4.92 or above.
- Implement network security measures to restrict unauthorized access.
Long-Term Security Practices
- Regularly monitor and update Exim for security patches.
- Conduct security audits to identify and mitigate vulnerabilities.
Patching and Updates
- Apply patches provided by Exim to address the Integer Overflow vulnerability.