libssh-0.9.6-13.el8_9
エラータID: AXSA:2024-7496:01
リリース日:
2024/02/02 Friday - 10:29
題名:
libssh-0.9.6-13.el8_9
影響のあるチャネル:
Asianux Server 8 for x86_64
Severity:
Moderate
Description:
以下項目について対処しました。
[Security Fix]
- OpenSSH の特定の拡張機能を利用した SSH トランスポート
プロトコルの処理には、SSH バイナリパケットプロトコルの
ハンドシェイク時に誤ったシーケンス番号を使用してしまう
問題があるため、リモートの攻撃者により、一部のセキュリティ
機能が無効化もしくはダウングレードされた状態での接続を
可能とする脆弱性が存在します。(CVE-2023-48795)
解決策:
パッケージをアップデートしてください。
CVE:
CVE-2023-48795
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.
追加情報:
N/A
ダウンロード:
SRPMS
- libssh-0.9.6-13.el8_9.src.rpm
MD5: bdb840b8b99bed6c0163690b6b887f6b
SHA-256: 90c32af2996cd731e512fad5b406feef5031b823fb8492302577fbdaa5f398c6
Size: 1.08 MB
Asianux Server 8 for x86_64
- libssh-0.9.6-13.el8_9.i686.rpm
MD5: b73742ffc2c2dddda6560699b26625a4
SHA-256: 7ac468d31578aa8bc066996e09cea700d1cab08c34b33d85f0d14db8122fc54d
Size: 238.30 kB - libssh-0.9.6-13.el8_9.x86_64.rpm
MD5: 7be27378feb02fe982a0ea7ac1328a5c
SHA-256: 9ea9577e9e45eb137d77bdf9c642af84508e0ee3d5d7ff0f7027f597096a9e48
Size: 218.41 kB - libssh-config-0.9.6-13.el8_9.noarch.rpm
MD5: ebf459c8302624922efe16cc38eb6d08
SHA-256: e09b3b6a437d9d729430614dc7bf0078d6f5cd0603967a00abd9048647e7d2b9
Size: 19.66 kB - libssh-devel-0.9.6-13.el8_9.i686.rpm
MD5: a8308fb805a083a7e60cd4b0976363e4
SHA-256: a6dcb6e361c9ffdf903c37ec4d45e13e33914d726529af4802e90026530f7625
Size: 439.61 kB - libssh-devel-0.9.6-13.el8_9.x86_64.rpm
MD5: 76d891f031fb08e5701293fa5522c1a0
SHA-256: 5851efd143db6169bc688661d905e0ab70f17fef48ff014969e4ba5eab04ae2e
Size: 439.59 kB