Timing-based Password Guessing Vulnerability in OpenSSH 3.6.1p2 and earlier

CVE-2003-1562 · HIGH Severity

AV:N/AC:H/AU:N/C:C/I:C/A:C

sshd in OpenSSH 3.6.1p2 and earlier, when PermitRootLogin is disabled and using PAM keyboard-interactive authentication, does not insert a delay after a root login attempt with the correct password, which makes it easier for remote attackers to use timing differences to determine if the password step of a multi-step authentication is successful, a different vulnerability than CVE-2003-0190.

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