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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.
OpenSSH normally does not load liblzma, but a common third-party patch used by several Linux distributions causes it to load libsystemd, which in turn loads lzma. [4] A modified version of build-to-host.m4 was included in the release tar file uploaded on GitHub , which extracts a script that performs the actual injection into liblzma .
OpenSSH (also known as OpenBSD Secure Shell [a]) is a suite of secure networking utilities based on the Secure Shell (SSH) protocol, which provides a secure channel over an unsecured network in a client–server architecture.
The solution eliminates all unaligned free-branch instructions (instructions like RET or CALL which attackers can use to change control flow) inside a binary executable, and protects the free-branch instructions from being used by an attacker. The way G-Free protects the return address is similar to the XOR canary implemented by StackGuard ...
ssh-keygen is a standard component of the Secure Shell (SSH) protocol suite found on Unix, Unix-like and Microsoft Windows computer systems used to establish secure shell sessions between remote computers over insecure networks, through the use of various cryptographic techniques.
A vulnerability database (VDB) is a platform aimed at collecting, maintaining, and disseminating information about discovered computer security vulnerabilities.The database will customarily describe the identified vulnerability, assess the potential impact on affected systems, and any workarounds or updates to mitigate the issue.
Vulnerability mitigation is measures that do not close the vulnerability, but make it more difficult to exploit or reduce the consequences of an attack. [44] Reducing the attack surface , particularly for parts of the system with root (administrator) access, and closing off opportunities for exploits to engage in privilege exploitation is a ...
Logo. The Common Vulnerabilities and Exposures (CVE) system provides a reference method for publicly known information-security vulnerabilities and exposures. [1] The United States' National Cybersecurity FFRDC, operated by The MITRE Corporation, maintains the system, with funding from the US National Cyber Security Division of the US Department of Homeland Security. [2]