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SugarCRM zero-day used to compromise roughly 10% of all internet-accessible servers

Almost 10% of all internet-accessible SugarCRM servers (representing 291 of 3,066 servers, based on Censys data) were hacked and compromised using a zero-day exploit published online in late December.

SugarCRM describes the zero-day as an authentication bypass that allows threat actors to upload encoded images containing malicious PHP code on SugarCRM platforms.

Censys researchers say the final payload in many attacks appears to be a simple web shell that could be used to control compromised systems. According to an open-source report, the zero-day appears to have been used to drop crypto-mining malware as well.

SugarCRM released an official patch a week after public disclosure. The company said that all users who run on-premise servers of its SugarCRM Sell, Serve, Enterprise, Professional, and Ultimate services should apply the update to avoid future attacks.

The company says it has hired a forensics firm to investigate the one-week time window during which its cloud platform was exposed to possible attacks.

No CVE has been assigned to this issue yet.

Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook

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