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CVE-2007-2243

UnknownEPSS 2.47%

Last modified

CVE-2007-2243 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.47% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
2.47%

82.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpenbsdOpenssh1.2
OpenbsdOpenssh1.2.1
OpenbsdOpenssh1.2.2
OpenbsdOpenssh1.2.3
OpenbsdOpenssh1.2.27
OpenbsdOpenssh2.1
OpenbsdOpenssh2.1.1
OpenbsdOpenssh2.2
OpenbsdOpenssh2.3
OpenbsdOpenssh2.5
OpenbsdOpenssh2.5.1
OpenbsdOpenssh2.5.2
OpenbsdOpenssh2.9
OpenbsdOpenssh2.9.9
OpenbsdOpenssh2.9.9p2
OpenbsdOpenssh2.9p1
OpenbsdOpenssh2.9p2
OpenbsdOpenssh3.0
OpenbsdOpenssh3.0.1
OpenbsdOpenssh3.0.1p1
OpenbsdOpenssh3.0.2
OpenbsdOpenssh3.0.2p1
OpenbsdOpenssh3.0p1
OpenbsdOpenssh3.1
OpenbsdOpenssh3.1p1
OpenbsdOpenssh3.2
OpenbsdOpenssh3.2.2
OpenbsdOpenssh3.2.2p1
OpenbsdOpenssh3.2.3p1
OpenbsdOpenssh3.3
OpenbsdOpenssh3.3p1
OpenbsdOpenssh3.4
OpenbsdOpenssh3.4p1
OpenbsdOpenssh3.5
OpenbsdOpenssh3.5p1
OpenbsdOpenssh3.6
OpenbsdOpenssh3.6.1
OpenbsdOpenssh3.6.1p1
OpenbsdOpenssh3.6.1p2
OpenbsdOpenssh3.7
OpenbsdOpenssh3.7.1
OpenbsdOpenssh3.7.1p1
OpenbsdOpenssh3.7.1p2
OpenbsdOpenssh3.8
OpenbsdOpenssh3.8.1
OpenbsdOpenssh3.8.1p1
OpenbsdOpenssh3.9
OpenbsdOpenssh3.9.1
OpenbsdOpenssh3.9.1p1
OpenbsdOpenssh4.0

Showing 50 of 62 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2007-2243?
Severity scoring for CVE-2007-2243 is pending analysis. The EPSS model estimates a 2.47% probability of exploitation in the next 30 days.
How do I fix CVE-2007-2243?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2007-2243?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST