CVE-2020-5327

Dell Security Management Server versions prior to 10.2.10 contain a Java RMI Deserialization of Untrusted Data vulnerability. When the server is exposed to the internet and Windows Firewall is disabled, a remote unauthenticated attacker may exploit this vulnerability by sending a crafted RMI request to execute arbitrary code on the target host.

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

• https://www.dell.com/support/article/SLN320536
• https://www.dell.com/support/article/SLN320536