CVE-2020-21641 Explained : Impact and Mitigation
Learn about CVE-2020-21641, an Out-of-Band XML External Entity (OOB-XXE) vulnerability in Zoho ManageEngine Analytics Plus allowing remote attackers to read files and scan ports.
Zoho ManageEngine Analytics Plus before version 4.3.5 is affected by an Out-of-Band XML External Entity (OOB-XXE) vulnerability that allows remote attackers to read arbitrary files, enumerate folders, and scan internal ports via a crafted XML license file.
Understanding CVE-2020-21641
This CVE identifies a specific vulnerability in Zoho ManageEngine Analytics Plus that can be exploited by attackers to gain unauthorized access to sensitive information.
What is CVE-2020-21641?
The CVE-2020-21641 vulnerability is an Out-of-Band XML External Entity (OOB-XXE) issue in Zoho ManageEngine Analytics Plus, enabling attackers to perform various malicious actions through a manipulated XML license file.
The Impact of CVE-2020-21641
The vulnerability allows remote attackers to read arbitrary files, enumerate folders, and scan internal ports, potentially leading to unauthorized access to sensitive data and system compromise.
Technical Details of CVE-2020-21641
Zoho ManageEngine Analytics Plus before version 4.3.5 is susceptible to the following:
Vulnerability Description
The OOB-XXE vulnerability in Zoho ManageEngine Analytics Plus allows attackers to exploit XML processing to access unauthorized information.
Affected Systems and Versions
- Product: Zoho ManageEngine Analytics Plus
- Versions affected: Before 4.3.5
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a malicious XML license file to trigger the OOB-XXE flaw and gain unauthorized access.
Mitigation and Prevention
To address CVE-2020-21641, follow these steps:
Immediate Steps to Take
- Update Zoho ManageEngine Analytics Plus to version 4.3.5 or later.
- Monitor for any unauthorized access or unusual activities on the system.
Long-Term Security Practices
- Regularly update software and apply security patches.
- Conduct security assessments and penetration testing to identify vulnerabilities.
Patching and Updates
- Apply patches and updates provided by Zoho ManageEngine to mitigate the vulnerability and enhance system security.