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Cisco 9336C-FX2スイッチにおけるSSH Terrapin(CVE-2023-48795)に関する脆弱性

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環境

  • Cisco Nexus 9336C-FX2
  • クラスタ スイッチ(N9K-C9336C-FX2)
  • Cisco NX-OSソフトウェア(特にバージョン10.3(4a))
  • Ciscoがサポートするクラスタ スイッチを使用するNetApp環境
  • 脆弱性:CVE-2023-48795(SSH Terrapin Prefix Truncation Weakness)

問題

  • セキュリティスキャンで、Cisco Nexus9336C-FX2クラスタスイッチについて次の内容が報告されました

SSHTerrapinPrefixTruncationWeakness(CVE-2023-48795)

Synopsis: The remote SSH server is vulnerable to a mitm prefix truncation attack.

Description: The remote SSH server is vulnerable to a man-in-the-middle prefix truncation weakness known as Terrapin. This can allow a remote, man-in-the-middle attacker to bypass integrity checks and downgrade the connection's security.

  • 影響を受けるスイッチは、Cisco NX-OS バージョン10.3(4a)を実行していました。

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