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RegreSSHion is a family of security bugs in the OpenSSH software that allows for an attacker to remotely execute code and gain potential root access on a machine running the OpenSSH Server. [ 1 ] [ 2 ] The vulnerability was discovered by the Qualys Threat Research Unit and was disclosed on July 1, 2024.
[b] [4] The backdoor gives an attacker who possesses a specific Ed448 private key remote code execution through OpenSSH on the affected Linux system. The issue has been given the Common Vulnerabilities and Exposures number CVE - 2024-3094 and has been assigned a CVSS score of 10.0, the highest possible score.
On July 1, 2024, the RegreSSHion security vulnerability was disclosed, which could enable a remote attacker to cause OpenSSH to execute arbitrary code and gain full root access. It was inadvertently introduced in prior OpenSSH version 8.5p1 in October 2020, and was patched following version 9.8/9.8p1.
On its own, an arbitrary code execution exploit will give the attacker the same privileges as the target process that is vulnerable. [11] For example, if exploiting a flaw in a web browser, an attacker could act as the user, performing actions such as modifying personal computer files or accessing banking information, but would not be able to perform system-level actions (unless the user in ...
The researchers who discovered the attack have also created a vulnerability scanner to determine whether an SSH server or client is vulnerable. [8] The attack has been given the CVE ID CVE-2023-48795. [9] [3] In addition to the main attack, two other vulnerabilities were found in AsyncSSH, and assigned the CVE IDs CVE-2023-46445 and CVE-2023 ...
The operating systems or virtual machines the SSH servers are designed to run on without emulation; there are several possibilities: No indicates that it does not exist or was never released. Partial indicates that while it works, the server lacks important functionality compared to versions for other OSs but may still be under development.
Secure Shell (SSH) is a protocol allowing secure remote login to a computer on a network using public-key cryptography.SSH client programs (such as ssh from OpenSSH) typically run for the duration of a remote login session and are configured to look for the user's private key in a file in the user's home directory (e.g., .ssh/id_rsa).
The BlueKeep security vulnerability was first noted by the UK National Cyber Security Centre [2] and, on 14 May 2019, reported by Microsoft. The vulnerability was named BlueKeep by computer security expert Kevin Beaumont on Twitter. BlueKeep is officially tracked as: CVE-2019-0708 and is a "wormable" remote code execution vulnerability. [5] [6]