USN-7270-2: OpenSSH vulnerability

USN-7270-1 fixed a vulnerability in OpenSSH. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Original advisory details: It was discovered that the OpenSSH client incorrectly handled the non-default VerifyHostKeyDNS option. If that option were enabled, an...

USN-7270-2 openssh vulnerability

USN-7270-1 fixed a vulnerability in OpenSSH. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Original advisory details: It was discovered that the OpenSSH client incorrectly handled the non-default VerifyHostKeyDNS option. If that option were enabled, an...

Exploit for Detection of Error Condition Without Action in Openbsd Openssh

CVE-2025-26465 The OpenSSH client contains a logic error betw...

Security update for openssh

This update for openssh fixes the following issues: CVE-2025-26465: Fixed MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client bsc1237040. CVE-2025-26466: Fixed DoS attack against OpenSSH's client and server bsc1237041. Patch Instructions: To install this SUSE update use the SUSE...

SUSE-SU-2025:0585-1 Security update for openssh

This update for openssh fixes the following issues: - CVE-2025-26465: Fixed MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client bsc1237040. - CVE-2025-26466: Fixed DoS attack against OpenSSH's client and server bsc1237041...

New OpenSSH Flaws Enable Man-in-the-Middle and DoS Attacks — Patch Now

Two security vulnerabilities have been discovered in the OpenSSH secure networking utility suite that, if successfully exploited, could result in an active machine-in-the-middle MitM and a denial-of-service DoS attack, respectively, under certain conditions. The vulnerabilities, detailed by the...

SUSE CVE-2025-26465

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. Fo...

USN-7270-1: OpenSSH vulnerabilities

It was discovered that the OpenSSH client incorrectly handled the non-default VerifyHostKeyDNS option. If that option were enabled, an attacker could possibly impersonate a server by completely bypassing the server identity check. CVE-2025-26465 It was discovered that OpenSSH incorrectly handled...

CVE-2025-26466

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to ...

CVE-2025-26465

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. Fo...

[SECURITY] [DLA 4057-1] openssh security update

Debian LTS Advisory DLA-4057-1 [email protected] https://www.debian.org/lts/security/ Colin Watson February 18, 2025 https://wiki.debian.org/LTS Package : openssh Version : 1:8.4p1-5+deb11u4 CVE ID : CVE-2025-26465 The Qualys Threat Research Unit TRU discovered that the OpenSSH client i...

[SECURITY] [DSA 5868-1] openssh security update

------------------------------------------------------------------------- Debian Security Advisory DSA-5868-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso February 18, 2025 https://www.debian.org/security/faq -...

Qualys TRU Discovers Two Vulnerabilities in OpenSSH: CVE-2025-26465 & CVE-2025-26466

The Qualys Threat Research Unit TRU has identified two vulnerabilities in OpenSSH. The first, tracked as CVE-2025-26465, allows an active machine-in-the-middle attack on the OpenSSH client when the VerifyHostKeyDNS option is enabled. The second, CVE-2025-26466, affects both the OpenSSH client and...

PT-2025-7169

Name of the Vulnerable Software and Affected Versions OpenSSH versions 9.5p1 through 9.9p1 Description The issue is related to an uncontrolled consumption of resources in OpenSSH, which can be exploited by a remote attacker to cause a denial of service. This can be achieved through memory...

Debian dla-4057 : openssh-client - security update

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4057 advisory. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4057-1 [email protected] https://www.debian.org/lts/security/...

Debian: Security Advisory (DSA-5868-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2025 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...

OpenSSH 9.9p1 Denial of Service / Man-In-The-Middle

OpenSSH versions 6.8p1 to 9.9p1 contain a logic error that allow an on-path attacker a.k.a man-in-the-middle to impersonate any server when the VerifyHostKeyDNS option is enabled. This option is off by default. OpenSSH versions 9.5p1 to 9.9p1 are vulnerable to a memory/CPU denial of service relat...

DLA-4057-1 openssh - security update

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Ubuntu 16.04 LTS / 18.04 LTS : OpenSSH vulnerability (USN-7270-2)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-7270-2 advisory. USN-7270-1 fixed a vulnerability in OpenSSH. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Tenable has...

OpenSSH 安全漏洞

OpenSSH OpenBSD Secure Shell is a set of connection tools for secure access to remote computers from the Canadian OpenBSD Project Group. The tool is an open source implementation of the SSH protocol that supports encryption of all transmissions, effectively blocking eavesdropping, connection...