GCVE-110-OSM-2020-4

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published December 27, 2020

Brandjacking attack impersonating legitimate servlet API components from Apache, Eclipse Jetty, and Tomcat. Contains reverse TCP shell backdoor targeting Java web applications. Malicious code in doGet() method of HttpServlet.class. Uses base64 encoding to obfuscate C2 server IP and port. Opens reverse TCP shell to 45.87.122.54:8888 on every HTTP GET request serviced by the web application. Gives attackers interactive shell access with same privileges as the backdoored application. SHA1: c018607d8597ba2b9e64561518b9dfbb65ff9f2b

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

9.6/10

Critical · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions	Platforms
unknown	servlet-api	3.2.0 (affected)	—

References

Malicious maven package: servlet-api

advisory

vendor

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