Computer Security
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OpenSSH resreictions bypass
updated since 02.08.2015
SecurityVulns ID:14614
Threat Level:
Description:It's possible to bypass MaxAuthTries restrictions.
Affected:OPENSSH : OpenSSH 6.9
CVE:CVE-2015-5600 (The kbdint_next_device 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 consumption) via a long and duplicative list in the ssh -oKbdInteractiveDevices option, as demonstrated by a modified client that provides a different password for each pam element on this list.)
Original documentdocumentBlue Frost Security Research Lab, BFS-SA-2015-002: OpenSSH PAM Privilege Separation Vulnerabilities (24.08.2015)
 documentFREEBSD, FreeBSD Security Advisory FreeBSD-SA-15:16.openssh [REVISED] (02.08.2015)

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