CVE-2020-10189

Zoho ManageEngine Desktop Central before 10.0.474 allows remote code execution because of deserialization of untrusted data in getChartImage in the FileStorage class. This is related to the CewolfServlet and MDMLogUploaderServlet servlets.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Potential Mitigations

• Make fields transient to protect them from deserialization.
• An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/586.html

References

• http://packetstormsecurity.com/files/156730/ManageEngine-Desktop-Central-Java-Deserialization.html
• https://cwe.mitre.org/data/definitions/502.html
• https://srcincite.io/advisories/src-2020-0011/
• https://srcincite.io/pocs/src-2020-0011.py.txt
• https://www.manageengine.com/products/desktop-central/remote-code-execution-vulnerability.html
• https://www.zdnet.com/article/zoho-zero-day-published-on-twitter/
• http://packetstormsecurity.com/files/156730/ManageEngine-Desktop-Central-Java-Deserialization.html
• https://cwe.mitre.org/data/definitions/502.html
• https://srcincite.io/advisories/src-2020-0011/
• https://srcincite.io/pocs/src-2020-0011.py.txt
• https://www.manageengine.com/products/desktop-central/remote-code-execution-vulnerability.html
• https://www.zdnet.com/article/zoho-zero-day-published-on-twitter/