From 87702866b632bd09aea19137a6f5fba2bcd7a988 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Sachse?= <Joerg.Sachse@slub-dresden.de>
Date: Fri, 11 Mar 2022 13:01:16 +0100
Subject: [PATCH] fix: use correct syntax to disable insecure
HostKeyAlgorithms, KexAlgorithms and Ciphers
---
tasks/configure-ssh-hardening.yml | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tasks/configure-ssh-hardening.yml b/tasks/configure-ssh-hardening.yml
index b34818d..e7e235e 100644
--- a/tasks/configure-ssh-hardening.yml
+++ b/tasks/configure-ssh-hardening.yml
@@ -50,12 +50,12 @@
{{ "PasswordAuthentication no" if ansible_os_family == "Debian" else "PasswordAuthentication yes" }}
# disable weak host key algorithm ssh-dss (Digital Signature Algorithm (DSA) / Digital Signature Standard (DSS))
# NVT OID: 1.3.6.1.4.1.25623.1.0.117687
- HostKeyAlgorithms -ssh-dss
+ HostKeyAlgorithms ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-rsa,ssh-rsa-cert-v01@openssh.com
# disable weak KEX algorithms
# NVT OID: 1.3.6.1.4.1.25623.1.0.150713
- KexAlgorithms -diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
+ KexAlgorithms diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,curve25519-sha256,curve25519-sha256@libssh.org
# disable weak Ciphers (crypto algorithms)
# NVT OID: 1.3.6.1.4.1.25623.1.0.105611
- Ciphers -3des-cbc,aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc
+ Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com
notify:
- restart sshd
--
GitLab