Nov 27, 2023NewsroomServer Security / Encryption A new study has demonstrated that it's possible for passive network attackers to obtain private RSA host keys from a vulnerable SSH server by observing when naturally occurring computational faults that occur while the connection is being established. The Secure Shell (SSH) protocol is a method for securely transmitting … [Read more...] about Experts Uncover Passive Method to Extract Private RSA Keys from SSH Connections
SSH
ShellBot Uses Hex IPs to Evade Detection in Attacks on Linux SSH Servers
Oct 12, 2023Newsroom The threat actors behind ShellBot are leveraging IP addresses transformed into its hexadecimal notation to infiltrate poorly managed Linux SSH servers and deploy the DDoS malware. "The overall flow remains the same, but the download URL used by the threat actor to install ShellBot has changed from a regular IP address to a hexadecimal value," the AhnLab … [Read more...] about ShellBot Uses Hex IPs to Evade Detection in Attacks on Linux SSH Servers
PoC Exploit Released for Critical VMware Aria’s SSH Auth Bypass Vulnerability
Sep 03, 2023THNNetwork Security / Vulnerability Proof-of-concept (PoC) exploit code has been made available for a recently disclosed and patched critical flaw impacting VMware Aria Operations for Networks (formerly vRealize Network Insight). The flaw, tracked as CVE-2023-34039, is rated 9.8 out of a maximum of 10 for severity and has been described as a case of authentication … [Read more...] about PoC Exploit Released for Critical VMware Aria’s SSH Auth Bypass Vulnerability
New IoT RapperBot Malware Targeting Linux Servers via SSH Brute-Forcing Attack
A new IoT botnet malware dubbed RapperBot has been observed rapidly evolving its capabilities since it was first discovered in mid-June 2022. "This family borrows heavily from the original Mirai source code, but what separates it from other IoT malware families is its built-in capability to brute force credentials and gain access to SSH servers instead of Telnet as implemented … [Read more...] about New IoT RapperBot Malware Targeting Linux Servers via SSH Brute-Forcing Attack
Microsoft Says Chinese Hackers Were Behind SolarWinds Serv-U SSH 0-Day Attack
Microsoft has shared technical details about a now-fixed, actively exploited critical security vulnerability affecting SolarWinds Serv-U managed file transfer service that it has attributed with "high confidence" to a threat actor operating out of China. In mid-July, the Texas-based company remedied a remote code execution flaw (CVE-2021-35211) that was rooted in Serv-U's … [Read more...] about Microsoft Says Chinese Hackers Were Behind SolarWinds Serv-U SSH 0-Day Attack
A New Fileless P2P Botnet Malware Targeting SSH Servers Worldwide
Cybersecurity researchers today took the wraps off a sophisticated, multi-functional peer-to-peer (P2P) botnet written in Golang that has been actively targeting SSH servers since January 2020.Called "FritzFrog," the modular, multi-threaded and file-less botnet has breached more than 500 servers to date, infecting well-known universities in the US and Europe, and a railway … [Read more...] about A New Fileless P2P Botnet Malware Targeting SSH Servers Worldwide
Post-Quantum TLS 1.3 and SSH Performance (preliminary results)
Co-author: Dimitrios Sikeridis. Motivation As brought up on multiple occasions, if a real-world quantum computer was ever built, it could jeopardize public key exchange, encryption, and digital signature schemes used in secure tunnel protocols today like (D)TLS, SSH, IKEv2/IPsec and more. To prepare for a post-quantum future, NIST has embarked on a journey of standardizing … [Read more...] about Post-Quantum TLS 1.3 and SSH Performance (preliminary results)