OpenSSH 8.2 Just Works with U2F/FIDO2 Security Keys

OpenSSH is on a roll. In February, OpenSSH 8.2 introduced first-class support for FIDO2 nee U2F security keys, making hardware backed keys accessible for less than $20. This is not some complicated PAM setup, or some janky cryptographic trick, but a proper public key type, where the private key i...

OpenSSH Vulnerabilities Jan-Oct 2019

Summary Symantec SWG products using affected versions of OpenSSH are susceptible to multiple vulnerabilities. A malicious SCP server or SCP man-in-the-middle MITM attacker can modify state on the SCP client host. A local attacker can cause denial of service through OpenSSH application crashes...

Microsoft Windows Unquoted Service Path Privilege Escalation Exploit

This Metasploit module exploits a logic flaw due to how the lpApplicationName parameter is handled. When the lpApplicationName contains a space, the file name is ambiguous. Take this file path as example: C:\program files\hello.exe; The Windows API will try to interpret this as two possible paths...

Huawei EulerOS: Security Advisory for openssh (EulerOS-SA-2020-1419)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Microsoft Windows Unquoted Service Path Privilege Escalation

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework require 'msf/core/exploit/exe' class MetasploitModule 'Windows Unquoted Service Path Privilege Escalation', 'Description' = %q This module exploits a logic flaw due to h...

EulerOS 2.0 SP3 : openssh (EulerOS-SA-2020-1419)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target...

Arbitrary Code Execution

openssh is vulnerable to arbitrary code execution. The vulnerability exists as the pamsshagentauth PAM module was built in Red Hat Enterprise Linux 6, the glibc's error function was called rather than the intended error function in pamsshagentauth to report errors. As these two functions expect...

Privilege Escalation

openssh is vulnerable to privilege escalation. A Red Hat specific patch used in the openssh packages as shipped in Red Hat Enterprise Linux 5.4 RHSA-2009:1287 loosened certain ownership requirements for directories used as arguments for the ChrootDirectory configuration options. A malicious user...

Man-in-the-Middle (MitM)

openssh is vulnerable to man-in-the-middle attack. A flaw was found in the SSH protocol. An attacker able to perform a man-in-the-middle attack may be able to obtain a portion of plain text from an arbitrary ciphertext block when a CBC mode cipher was used to encrypt SSH communication. This updat...

Privilege Escalation

openssh is vulnerable privilege escalation. When ssh was unable to create untrusted cookie, ssh used a trusted cookie instead, possibly allowing the administrative user of a untrusted remote server, or untrusted application run on the remote server, to gain unintended access to a users local X...

Information Disclosure

openssh is vulnerable to information disclosure. The vulnerability exists as a flaw was found in the way the OpenSSH server processes GSSAPI authentication requests. When GSSAPI authentication was enabled in the OpenSSH server, a remote attacker was potentially able to determine if a username is...

Authorization Bypass

openssh is vulnerable to authorization bypass. The vulnerability exists as a flaw was found in the way the ssh server wrote account names to the audit subsystem. An attacker could inject strings containing parts of audit messages, which could possibly mislead or confuse audit log parsing tools...

Windows Unquoted Service Path Privilege Escalation

This module exploits a logic flaw due to how the lpApplicationName parameter is handled. When the lpApplicationName contains a space, the file name is ambiguous. Take this file path as example: C:\program files\hello.exe; The Windows API will try to interpret this as two possible paths:...

EulerOS Virtualization for ARM 64 3.0.6.0 : openssh (EulerOS-SA-2020-1360)

According to the version of the openssh packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existenc...

Huawei EulerOS: Security Advisory for openssh (EulerOS-SA-2020-1360)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Security Bulletin: IBM has announced a release for IBM Security Identity Governance and Intelligence in response to OpenSSH vulnerabilty (CVE-2018-15473).

Summary IBM has announced a release for IBM Security Identity Governance and Intelligence IGI in response to security vulnerability, 1 issue for OpenSSH: a remote attacker could obtain sensitive information by sending a specially crafted request. Vulnerability Details CVEID: CVE-2018-15473...

Huawei EulerOS: Security Advisory for openssh (EulerOS-SA-2020-1316)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

EulerOS 2.0 SP5 : openssh (EulerOS-SA-2020-1316)

According to the version of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target...

OpenSSH 7.7 - 7.9, 8.x < 8.1 Integer Overflow Vulnerability

OpenSSH is prone to an integer overflow vulnerability. SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:openbsd:openssh";...

TrickBot Now Exploits Infected PCs to Launch RDP Brute Force Attacks

A new module for TrickBot banking Trojan has recently been discovered in the wild that lets attackers leverage compromised systems to launch brute-force attacks against selected Windows systems running a Remote Desktop Protocol RDP connection exposed to the Internet. The module, dubbed...