openssh-7.4p1-23.0.3.0.1.el7.AXS7
エラータID: AXSA:2025-9844:01
リリース日:
2025/04/10 Thursday - 15:23
題名:
openssh-7.4p1-23.0.3.0.1.el7.AXS7
影響のあるチャネル:
Asianux Server 7 for x86_64
Severity:
Moderate
Description:
以下項目について対処しました。
[Security Fix]
- OpenSSH には、VerifyHostKeyDNS オプションが有効になっている
などの特定の状況下において、ホストキーを検証する際のエラーコードの
処理方法に問題があるため、リモートの攻撃者により、クライアント側の
メモリを枯渇させることを介して、中間者攻撃を可能とする脆弱性が
存在します。(CVE-2025-26465)
解決策:
パッケージをアップデートしてください。
CVE:
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. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.
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. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.
追加情報:
N/A
ダウンロード:
Asianux Server 7 for x86_64
- openssh-7.4p1-23.0.3.0.1.el7.AXS7.x86_64.rpm
MD5: 27cf5e08b65505b3a8c75ce77258bc14
SHA-256: 7e619b11da0c844db32fb6908e57741a670d965b08ed7b6909445ba6507632f4
Size: 485.71 kB - openssh-askpass-7.4p1-23.0.3.0.1.el7.AXS7.x86_64.rpm
MD5: 35225d166c303294b8a45616f6945489
SHA-256: 2cfc606efc76d0c0d7f36617607e5d307c1f2e3def56ff3c2779ac79c7414016
Size: 77.16 kB - openssh-clients-7.4p1-23.0.3.0.1.el7.AXS7.x86_64.rpm
MD5: 75049d599cfebcb6167675501e45ada4
SHA-256: 8831ca5515b43deb1151eb3ed026b2f027464b20a1ebc27067d731a41ea6be29
Size: 655.86 kB - openssh-keycat-7.4p1-23.0.3.0.1.el7.AXS7.x86_64.rpm
MD5: 39bd3438111fcac999628f90dd71f7f2
SHA-256: 3ea394dcf6445ddea9e45aab8d960a0c2aecd1d9374798df65549ec870436614
Size: 97.50 kB - openssh-server-7.4p1-23.0.3.0.1.el7.AXS7.x86_64.rpm
MD5: 32ce270c4320aeaef4b32e8a96e83e0c
SHA-256: 3c2536d4b5743d0817a57d5a11b9cc1c007976b7ce9dc22be53b567e9c0ab1b0
Size: 459.80 kB