Vulnerability Monitor

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CVE-2007-2243

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.

Published

2007-04-25T16:19:00.000

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-287
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application openbsd openssh 1.2 Yes
Application openbsd openssh 1.2.1 Yes
Application openbsd openssh 1.2.2 Yes
Application openbsd openssh 1.2.3 Yes
Application openbsd openssh 1.2.27 Yes
Application openbsd openssh 2.1 Yes
Application openbsd openssh 2.1.1 Yes
Application openbsd openssh 2.2 Yes
Application openbsd openssh 2.3 Yes
Application openbsd openssh 2.5 Yes
Application openbsd openssh 2.5.1 Yes
Application openbsd openssh 2.5.2 Yes
Application openbsd openssh 2.9 Yes
Application openbsd openssh 2.9.9 Yes
Application openbsd openssh 2.9.9p2 Yes
Application openbsd openssh 2.9p1 Yes
Application openbsd openssh 2.9p2 Yes
Application openbsd openssh 3.0 Yes
Application openbsd openssh 3.0.1 Yes
Application openbsd openssh 3.0.1p1 Yes
Application openbsd openssh 3.0.2 Yes
Application openbsd openssh 3.0.2p1 Yes
Application openbsd openssh 3.0p1 Yes
Application openbsd openssh 3.1 Yes
Application openbsd openssh 3.1p1 Yes
Application openbsd openssh 3.2 Yes
Application openbsd openssh 3.2.2 Yes
Application openbsd openssh 3.2.2p1 Yes
Application openbsd openssh 3.2.3p1 Yes
Application openbsd openssh 3.3 Yes
Application openbsd openssh 3.3p1 Yes
Application openbsd openssh 3.4 Yes
Application openbsd openssh 3.4p1 Yes
Application openbsd openssh 3.5 Yes
Application openbsd openssh 3.5p1 Yes
Application openbsd openssh 3.6 Yes
Application openbsd openssh 3.6.1 Yes
Application openbsd openssh 3.6.1p1 Yes
Application openbsd openssh 3.6.1p2 Yes
Application openbsd openssh 3.7 Yes
Application openbsd openssh 3.7.1 Yes
Application openbsd openssh 3.7.1p1 Yes
Application openbsd openssh 3.7.1p2 Yes
Application openbsd openssh 3.8 Yes
Application openbsd openssh 3.8.1 Yes
Application openbsd openssh 3.8.1p1 Yes
Application openbsd openssh 3.9 Yes
Application openbsd openssh 3.9.1 Yes
Application openbsd openssh 3.9.1p1 Yes
Application openbsd openssh 4.0 Yes
Application openbsd openssh 4.0p1 Yes
Application openbsd openssh 4.1 Yes
Application openbsd openssh 4.1p1 Yes
Application openbsd openssh 4.2 Yes
Application openbsd openssh 4.2p1 Yes
Application openbsd openssh 4.3 Yes
Application openbsd openssh 4.3p1 Yes
Application openbsd openssh 4.3p2 Yes
Application openbsd openssh 4.4 Yes
Application openbsd openssh 4.4p1 Yes
Application openbsd openssh 4.5 Yes
Application openbsd openssh 4.6 Yes
References