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Overview Recently, NSFOCUS CERT detected that Atlassian officially released a security bulletin for Confluence Server and Data Center OGNL injection vulnerability (CVE-2022-26134). Remote attackers can construct OGNL expressions for injection without authentication to execute arbitrary code on Confluence Server or Data Center, with a CVSS score of 10. At present, the details of the vulnerability […]

NSFOCUS at RSAC 2022 Why MEC is so important to the 5G Network? MEC (Multiple-access Edge Computing) is an important part of the 5G architecture, which is a type of distributed computing used to reduce bandwidth and improve response time, allowing operators to deploy their applications from centralized data centers to the edge of the […]

Transform One of the most important industry events – RSA Conference 2022 just had its opening both offline and online this year on June 6th, 2022. RSAC 2022 has selected the word “Transform” as the theme this year. It says “The security needs of organizations are expanding, and companies of all sizes across the globe […]

RSA Conference 2022 will kick off in San Francisco on June 6, 2022. The theme of RSA Conference 2022 is Transform[i], which is a further extension of last year’s theme Resilience. Resilience can be the emergency and recovery capabilities of small and medium organizations facing cyber threats, and the survival and adaption capabilities of large […]

Background   On May 4, 2022, F5 issued a security bulletin regarding a remote code execution vulnerability in iControlREST component of BIG-IP products. The CVE number of the vulnerability is CVE-2022-1388. The vulnerability can bypass authentication and remotely execute arbitrary code with a vulnerability score of CVSS up to 9.8. Since the bulletin, attackers have […]

Abstract In August 2021, Kevin Bock and his team from the University of Maryland and the University of Colorado Boulder proposed a new TCP reflective amplification attack method initiated by the middlebox at the USENIX conference. (See more details at https://geneva.cs.umd.edu/papers/usenix-weaponizing-ddos.pdf) In mid-April this year, NSFOCUS spotted that one of its Cloud DDoS Protection Service […]

Incident discovered In early 2021, a private cloud service provider in the United States was hit by a massive hybrid SYN Flood attack. As the service provider is a customer of NSFOCUS Cloud DDoS Protection Service and subscribed with Managed Security Service (MSS), the malicious traffic is noticed instantly by NSFOCUS Managed Security Service team, […]

Overview Recently, NSFOCUS CERT found that OpenSSL issued a security notice, which fixed multiple security vulnerabilities in OpenSSL products. OpenSSL is an open source software library package. Applications can use this package to communicate securely, avoid eavesdropping, and confirm the identity of the other end of the connection. It is widely used on web servers […]

Incident Response On mid-2021, a multinational telecom service provider was attacked by a sudden large-scale DDoS attack with the peak value of 170Gbps with maximum 5Gbps of malicious traffic leakage, with equivalent Mitigation Effect (mitigated malicious traffic/total ingress traffic) stays at least 97%. The service provider did not encounter service interruption during the whole incident. […]

Overview Recently, NSFOCUS CERT detected that F5 issued a security bulletin to fix an authentication bypass vulnerability in BIG-IP. Unauthenticated attackers can use the control interface to exploit, through the BIG-IP management interface or its own IP address. Network access to the iControl REST interface to execute arbitrary system commands, create or delete files, and […]