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OpenSSH 4.6 Vulnerability allows Remote Attackers to Confirm Valid Usernames (CVE-2007-2243)

Solution Verified - Updated 2013-12-05T21:51:28+00:00 -

Issue

A security flaw in OpenSSH 4.6 and prior versions can be exploited to allow remote attackers to discern the validity of system level user names. This vulnerability exists when ChallengeResponseAuthentication has been enabled.

Environment

Red Hat Enterprise Linux (RHEL) 5
Red Hat Enterprise Linux (RHEL) 4

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