Overview
Recently, NSFOCUS CERT detected that Apache officially issued a security notice, fixing an Apache Dubbo deserialization vulnerability (CVE-2023-23638). Due to the flaws in Apache Dubbo’s deserialization security check, remote attackers can construct malicious data packets to conduct deserialization attacks, and finally execute arbitrary code on the target system. Affected users are requested to take protective measures as soon as possible.
Scope of Impact
Affected version
- Apache Dubbo 2.7.x <= 2.7.21
- Apache Dubbo 3.0.x <= 3.0.13
- Apache Dubbo 3.1.x <= 3.1.5
Unaffected version
- Apache Dubbo >= 2.7.22
- Apache Dubbo >= 3.0.14
- Apache Dubbo >= 3.1.6
Detection
1. Relevant users can view the current Dubbo version number on Dubbo’s web log interface, the path is /log.html or /sysinfo/logs
2. Users can also view the currently used Dubbo version number in the pom.xml file of the project.
If the version is within the affected range, there may be a security risk.
Mitigation
Official upgrade
At present, the official has released a repair version for this vulnerability. It is recommended that affected users update to the latest version in time. The download link is: https://github.com/apache/dubbo/releases
Other measures
Close the Dubbo server port open to the public network, and only allow trusted IP access.
Statement
This advisory is only used to describe a potential risk. NSFOCUS does not provide any commitment or promise on this advisory. NSFOCUS and the author will not bear any liability for any direct and/or indirect consequences and losses caused by transmitting and/or using this advisory. NSFOCUS reserves all the rights to modify and interpret this advisory. Please include this statement paragraph when reproducing or transferring this advisory. Do not modify this advisory, add/delete any information to/from it, or use this advisory for commercial purposes without permission from NSFOCUS.
About NSFOCUS
NSFOCUS, Inc., a global network and cyber security leader, protects enterprises and carriers from advanced cyber attacks. The company’s Intelligent Hybrid Security strategy utilizes both cloud and on-premises security platforms, built on a foundation of real-time global threat intelligence, to provide multi-layered, unified and dynamic protection against advanced cyber attacks.
NSFOCUS works with Fortune Global 500 companies, including four of the world’s five largest financial institutions, organizations in insurance, retail, healthcare, critical infrastructure industries as well as government agencies. NSFOCUS has technology and channel partners in more than 60 countries, is a member of both the Microsoft Active Protections Program (MAPP), and the Cloud Security Alliance (CSA).
A wholly owned subsidiary of NSFOCUS Technologies Group Co., Ltd., the company has operations in the Americas, Europe, the Middle East and Asia Pacific.
