openssh: MaxAuthTries limit bypass via duplicates in KbdInteractiveDevices

It was discovered that the OpenSSH sshd daemon did not check the list of keyboard-interactive authentication methods for duplicates. A remote attacker could use this flaw to bypass the MaxAuthTries limit, making it easier to perform password guessing attacks...

OpenSSH sshd vulnerability

OpenSSH OpenBSD Secure Shell is a set of connection tools for secure access to remote computers maintained by the OpenBSD Project Group. The tools are an open source implementation of the SSH protocol and support encryption of all transmissions, effectively blocking eavesdropping, connection...

CVE-2015-5600

The kbdintnextdevice function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service CPU consumptio...

CVE-2015-5600

Summary (CVE-2015-5600): The kbdint_next_device function in OpenSSH sshd up to version 6.9 fails to properly constrain keyboard-interactive device processing within a single connection, enabling remote brute-force attempts or a denial-of-service via a long/duplicative ssh -oKbdInteractiveDevices ...

CVE-2015-5600

The kbdintnextdevice function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service CPU consumptio...