patch-manual-CVE-2025-26465-e-CVE-2025-26466

🛡️ 手動緩和策 - OpenSSH CVE-2025-26465 & CVE-2025-26466 🔍 スクリプトについて このスクリプトは、OpenSSH のセキュリティ問題に対する手動緩和策 を適用します。即時のアップデートは必要ありません。 🚨 CVE-2025-26465 SSH接続の傍受を防ぐために VerifyHostKeyDNS を削除します。 🚨 CVE-2025-26466 事前認証DoS攻撃 を防ぐために MaxStartups を調整します。 📜 スクリプトの使用方法 1 - wgetを使用した自動修正の適用 root@kitploit: wget -O...

CVE-2025-26465

CVE-2025-26465 OpenSSHクライアントは、バージョン6.8p1から9.9p1（両端を含む）の間に論理エラーが存在し、VerifyHostKeyDNSオプションが有効な場合にアクティブな中間者攻撃（MitM）に対して脆弱になります。これにより、悪意のある第三者がクライアントの接続試行時に正規のサーバーになりすますことが可能になります。 この検出方法はどのように機能しますか？ このテンプレートは、以下の脆弱性のあるバージョンにマッチします： root@kitploit: - "SSH-2.0-OpenSSH6.8p1" - "SSH-2.0-OpenSSH6.9p1" -...

TencentOS Server 4: openssh (TSSA-2026:0821)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0821 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities...

OpenSSH security update for 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...

MiracleLinux 8 : openssh-8.0p1-26.el8_10 (AXSA:2025-10918:05)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2025-10918:05 advisory. openssh: Machine-in-the-middle attack if VerifyHostKeyDNS is enabled CVE-2025-26465 Tenable has extracted the preceding description block directly from the...

EulerOS 2.0 SP9 : openssh (EulerOS-SA-2026-1009)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : In sshd in OpenSSH before 10.0, the DisableForwarding directive does not adhere to the documentation stating that it disables X11 and agent...

CLSA-2025-1766136770 Fix CVE(s): CVE-2025-26465

SECURITY UPDATE: VerifyHostKeyDNS server impersonation - debian/patches/CVE-2025-26465.patch: Fix cases where error codes were not correctly set - CVE-2025-26465...

RockyLinux 8 : openssh (RLSA-2025:16823)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2025:16823 advisory. openssh: Machine-in-the-middle attack if VerifyHostKeyDNS is enabled CVE-2025-26465 Tenable has extracted the preceding description block directly from the...

openssh security update

An update is available for openssh. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list OpenSSH is an SSH protocol implementation supported by a number of Linux, UNI...

openssh security update

An update is available for openssh. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list OpenSSH is an SSH protocol implementation supported by a number of Linux, UNI...

AlmaLinux 8 : openssh (ALSA-2025:16823)

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:16823 advisory. openssh: Machine-in-the-middle attack if VerifyHostKeyDNS is enabled CVE-2025-26465 Tenable has extracted the preceding description block directly from the...

openssh: Machine-in-the-middle attack if VerifyHostKeyDNS is enabled

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...

AlmaLinux 9 : openssh (ALSA-2025:6993)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:6993 advisory. openssh: Machine-in-the-middle attack if VerifyHostKeyDNS is enabled CVE-2025-26465 Tenable has extracted the preceding description block directly from the AlmaLin...

RHEL 9 : openssh (RHSA-2025:3837)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:3837 advisory. OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary f...

EulerOS 2.0 SP10 : openssh (EulerOS-SA-2025-1530)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious...

EulerOS 2.0 SP10 : openssh (EulerOS-SA-2025-1531)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious...

EulerOS 2.0 SP12 : openssh (EulerOS-SA-2025-1430)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious...

EulerOS 2.0 SP12 : openssh (EulerOS-SA-2025-1429)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious...

K000150876: OpenSSH vulnerability CVE-2025-26465

Security Advisory Description 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...

Moderate: Red Hat Security Advisory: openssh security update

An update for openssh is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...