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Above CVE-2021-42252 (11th October, 2021)
Preface: Linux mainly uses a paging mechanism to achieve virtual memory management. The size of the memory page is PAGE_SIZE bytes instead of 4 KB. On different platforms, the page size can range from 4 KB to 64 KB. Background: The Aspeed BMC family which is what is used on OpenPOWER machines and a number…
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Stay alert: Recently, an unknown trojan attack in the Linux environment, a malicious ELF file with UPX compression (11th Oct, 2021)
Preface: Antivirus software isn’t entirely useless on Linux. If you are running a Linux-based file server or mail server, you will probably need antivirus help. Background: ELF file extension, an acronym for Executable and Linkable Format, is a common standard file extension used for executable, object code, core dumps and shared libraries. It was being…
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About Apache HTTP Server 2.4.49 and 2.4.50 – CISA urges organizations to patch immediately if they haven’t already (7th Oct 2021)
Preface: the most famous UTF-8 attack was against unpatched web server. Background: The most common users of Apache HTTP Server are from Small Businesses and the Information Technology & Services industry. Perhaps How to Check the Apache Version? Open terminal application on your Linux, Windows/WSL or macOS desktop. Login to remote server using the ssh…
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If your IoT development is based on Zigbee,perhaps Zephyr CVE will bring to your consideration. (6th Oct 2021)
Preface: Ensure that the JSON parser does not try to write a potentially unlimited number of elements into a C array of a fixed size. Background: Zephyr is a small real-time operating system (RTOS) for connected, resource-constrained and embedded devices (with an emphasis on microcontrollers) supporting multiple architectures and released under the Apache License 2.0.…
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Fastly CDN outage, perhaps not cyber attack (4th Oct, 2021)
Preface: In addition to cyber security attacks. Cloud service providers face different technical challenges, including software and hardware levels. Background: Fastly is a company that provides content delivery network (CDN) services, mainly providing host static content and quickly showing it to Internet users. Fastly peers with other Internet Service Providers (ISPs) and Content Networks with…
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About CVE-2021-29249, IoT vendor should stay alert! (1st Oct, 2021)
Preface: BPF is available on most Unix-like operating systems and eBPF for Linux and for Microsoft Windows. In addition, if the driver for the network interface supports promiscuous mode, it allows the interface to be put into that mode so that all packets on the network can be received, even those destined to other hosts.…
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About GriftHorse Malware (30th Sep 2021)
Preface: Large portion of smartphone will not installed antivirus software. Even though it is installed. The antivirus vendor similar doing racing campaign with cyber criminals. Nowadays, vendor established malware sinkhole to find zero day vulnerability and existing cyber attack. If cyber criminals relies on software design limitation hiding itself on phone. Perhaps sinkhole not easy…
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Stealth attack of UEFI bootkit (29th Sep 2021)
Preface: Digital spyware and monitoring tech that allows the user to covertly monitor a target’s communications, or collect personal data emitted from their devices. Background: FinFisher, also known as FinSpy, is surveillance software marketed by Lench IT Solutions plc, which markets the spyware through law enforcement channels. On August 6, 2014, FinFisher source code, pricing,…
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About CVE-2021-20034 – (SMA 100 series) Unauthenticated SMA100 arbitrary file delete vulnerability – 27th Sep 2021
Point of view: More than 20 years ago, the firewall function was independent, excluding the firewall policy service and vpn function.The advantage is that when the firewall box is compromised. Nothing else will be found in the box by the attacker.Over time, the trend of unified threat management has grown. From a technical point of…
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About BTCPayment server – CVE-2021-3830 (26th Sep, 2021)
Preface: Cryptocurrency look like myth. Someone avoid to use. But somebody like it. If Cryptocurrency only provide payment function. That is no investment value. Furthermore if someone going to transfer money will be know who is sender and recipient. If it come true, what is the result? Background: BTCPay Server is an open source, P2P…