CVE-2025-26465

OpenSSH 客户端在 6.8p1 至 9.9p1（含）版本之间存在一个逻辑错误，如果启用了 VerifyHostKeyDNS 选项，则容易受到主动中间人（MitM）攻击，当客户端尝试连接时，恶意入侵者可以冒充合法服务器。

此检测方法如何工作？

该模板匹配以下易受攻击的版本：

          - "SSH-2.0-OpenSSH_6.8p1"
          - "SSH-2.0-OpenSSH_6.9p1"
          - "SSH-2.0-OpenSSH_7.0p1"
          - "SSH-2.0-OpenSSH_7.1p1"
          - "SSH-2.0-OpenSSH_7.2p1"
          - "SSH-2.0-OpenSSH_7.3p1"
          - "SSH-2.0-OpenSSH_7.4p1"
          - "SSH-2.0-OpenSSH_7.5p1"
          - "SSH-2.0-OpenSSH_7.6p1"
          - "SSH-2.0-OpenSSH_7.7p1"
          - "SSH-2.0-OpenSSH_7.8p1"
          - "SSH-2.0-OpenSSH_7.9p1"
          - "SSH-2.0-OpenSSH_8.0p1"
          - "SSH-2.0-OpenSSH_8.1p1"
          - "SSH-2.0-OpenSSH_8.2p1"
          - "SSH-2.0-OpenSSH_8.3p1"
          - "SSH-2.0-OpenSSH_8.4p1"
          - "SSH-2.0-OpenSSH_8.5p1"
          - "SSH-2.0-OpenSSH_8.6p1"
          - "SSH-2.0-OpenSSH_8.7p1"
          - "SSH-2.0-OpenSSH_8.8p1"
          - "SSH-2.0-OpenSSH_8.9p1"
          - "SSH-2.0-OpenSSH_9.0p1"
          - "SSH-2.0-OpenSSH_9.1p1"
          - "SSH-2.0-OpenSSH_9.2p1"
          - "SSH-2.0-OpenSSH_9.3p1"
          - "SSH-2.0-OpenSSH_9.4p1"
          - "SSH-2.0-OpenSSH_9.5p1"
          - "SSH-2.0-OpenSSH_9.6p1"
          - "SSH-2.0-OpenSSH_9.7p1"
          - "SSH-2.0-OpenSSH_9.8p1"
          - "SSH-2.0-OpenSSH_9.9p1"

如果匹配成功，则认为该主机易受 CVE-2025-26465 攻击。

如何运行此脚本？

从此处下载 Nuclei
将模板复制到本地系统
运行以下命令：nuclei -u https://yourHost.com -t template.yaml

参考

https://thehackernews.com/2025/02/new-openssh-flaws-enable-man-in-middle.html

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CVE-2025-26465

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CVE-2025-26465

此检测方法如何工作？

如何运行此脚本？

参考

免责声明

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