Informations about SSL certificates and networks security
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It’s a serious one: The vulnerability, which is a signal handler race condition in OpenSSH’s server (sshd), allows unauthenticated remote code execution (RCE) as root on glibc-based Linux systems; that presents a significant security risk. This race condition affects sshd in its default configuration. […] This vulnerability, if exploited, could lead to full system compromise … Read More “New Open SSH Vulnerability” »
Last week, the internet dodged a major nation-state attack that would have had catastrophic cybersecurity repercussions worldwide. It’s a catastrophe that didn’t happen, so it won’t get much attention—but it should. There’s an important moral to the story of the attack and its discovery: The security of the global internet depends on countless obscure pieces … Read More “Backdoor in XZ Utils That Almost Happened” »
This is interesting: For the first time, researchers have demonstrated that a large portion of cryptographic keys used to protect data in computer-to-server SSH traffic are vulnerable to complete compromise when naturally occurring computational errors occur while the connection is being established. […] The vulnerability occurs when there are errors during the signature generation that … Read More “New SSH Vulnerability” »
Researchers build a covert channel between two virtual machines using a shared cache. Powered by WPeMatico
New research: “Flip Feng Shui: Hammering a Needle in the Software Stack,” by Kaveh Razavi, Ben Gras, Erik Bosman Bart Preneel, Cristiano Giuffrida, and Herbert Bos. Abstract: We introduce Flip Feng Shui (FFS), a new exploitation vector which allows an attacker to induce bit flips over arbitrary physical memory in a fully controlled way. FFS … Read More “Powerful Bit-Flipping Attack” »