CVE-2007-2243

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    CVE-2007-2243

    Published: 25 Apr 2007Last Modified: 10 Apr 2026

    Summary:

    Details: OpenSSH 4.6 and earlier, when ChallengeResponseAuthentication is enabled, allows remote attackers to determine the existence of user accounts by attempting to authenticate via S/KEY, which displays a different response if the user account exists, a similar issue to CVE-2001-1483.

    References: https://security.netapp.com/advisory/ntap-20191107-0003/, http://lists.grok.org.uk/pipermail/full-disclosure/2007-April/053906.html, http://lists.grok.org.uk/pipermail/full-disclosure/2007-April/053951.html, http://securityreason.com/securityalert/2631, http://www.osvdb.org/34600, http://www.securityfocus.com/bid/23601, https://exchange.xforce.ibmcloud.com/vulnerabilities/33794

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High