Date: Tue, 21 Jul 2015 11:16:35 +0200 From: king cope <isowarez.isowarez.isowarez@...glemail.com> To: oss-security@...ts.openwall.com Subject: CVE Request for OpenSSH vulnerability - authentication limits bypass Hello list, solar designer, Can you please add a CVE for the mentioned vulnerability in OpenSSH. The OpenSSH server normally wouldn't allow successive authentications that exceed the MaxAuthTries setting in sshd_config, with this vulnerability the allowed login retries can be extended limited only by the LoginGraceTime setting, that can be more than 10000 tries (depends on the network speed), and even more for local attacks. Technically this vulnerability affects OpenSSH. It can be found with FreeBSD installations because these use the keyboard-interactive authentication mechanism (that is the one affected) in combination with pam. I haven't tested skey/bsd auth. To note that this vulnerability looks pretty old, a test against FreeBSD 6.2 (2007 release date) showed it vulnerable. Additionally there is no delay between the authentication retries, but this is another issue that makes this vulnerability more effective. CVE please! Thank you, KC Reference: http://seclists.org/fulldisclosure/2015/Jul/92
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