CVE-2018-3972

An exploitable code execution vulnerability exists in the Levin deserialization functionality of the Epee library, as used in Monero Lithium Luna (v0.12.2.0-master-ffab6700) and other cryptocurrencies. A specially crafted network packet can cause a logic flaw, resulting in code execution. An attacker can send a packet to trigger this vulnerability.

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://blog.talosintelligence.com/2018/09/epee-levin-vuln.html
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0637
• https://blog.talosintelligence.com/2018/09/epee-levin-vuln.html
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0637