Configure the Authentication Blocklist and Allowlist Properly

SSH provides the blocklist and allowlist function. You can set a list of users or user groups to allow or deny SSH login for them. By default, this function is not configured in openEuler. The related fields are as follows: AllowUsers userlist specifies the space-separated users who are allowed t...

Linux: SSH DenyUsers

The DenyUsersvariable gives the system administrator the option of denying specific users to ssh into the system. The list consists of space separated user names. Numeric user IDs are not recognized with this variable. If a system administrator wants to restrict user access further by specificall...

SUSE SLED12 Security Update : openssh (SUSE-SU-2017:0607-2)

This update for openssh fixes the following issues : - CVE-2016-8858: prevent resource depletion during key exchange bsc1005480 - CVE-2016-10009: limit directories for loading PKCS11 modules to avoid privilege escalation bsc1016366 - CVE-2016-10011: Prevent possible leaks of host private keys to...

OpenSSH 7.x < 7.4 Multiple Vulnerabilities

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OpenSSH < 7.4 Multiple Vulnerabilities

According to its banner, the version of OpenSSH running on the remote host is prior to 7.4. It is, therefore, affected by multiple vulnerabilities : - A flaw exists in ssh-agent due to loading PKCS11 modules from paths that are outside a trusted whitelist. A local attacker can exploit this, by...