Vulnerability Details : 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 2007-04-25 16:19:00
Updated 2025-04-09 00:30:58
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2007-2243

Threat overview for CVE-2007-2243

Top countries where our scanners detected CVE-2007-2243
Top open port discovered on systems with this issue 22
IPs affected by CVE-2007-2243 233,207
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2007-2243!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2007-2243

EPSS FAQ
0.52%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 64 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2007-2243

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
 MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
 NIST

CWE ids for CVE-2007-2243

  • When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
    Assigned by: nvd@nist.gov (Primary)

Vendor statements for CVE-2007-2243

  • Red Hat 2007-05-23
    Not vulnerable. OpenSSH supplied with Red Hat Enterprise Linux 2.1, 3, 4, and 5 does not contain S/KEY support.

References for CVE-2007-2243

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