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Matrix Compromised Through Known Jenkins Flaws

April 12, 2019 / Kacy Zurkus

Matrix users are encouraged to change their passwords after an unauthorized actor gained access to the servers hosting Matrix.org. Those using IRC bridging are also encouraged to change their NickServ passwords. An open network for secure, interoperable, decentralized, real-time communication over IP, Matrix is used across instant messaging, VoIP/WebRTC signaling and internet of things (IoT) communication, according to the company’s website. On April 9, 2019, security researcher Jaikey Sarraf alerted Matrix to existing vulnerabilities in Jenkins, which Matrix said it used for continuous integration. “The version of Jenkins we were using had a vulnerability (CVE-2019-1003000, CVE-2019-1003001, CVE-2019-1003002) which allowed an attacker to hijack credentials (forwarded ssh keys), giving access to our production infrastructure.” When Matrix identified that machines had been compromised, the company removed Jenkins and reportedly denied the attacker access to the comprom...

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