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CVE-2008-4109

UnknownEPSS 28.60%

Last modified

CVE-2008-4109 is a vulnerability of currently unknown severity. A certain Debian patch for OpenSSH before 4.3p2-9etch3 on etch; before 4.6p1-1 on sid and lenny; and on other distributions such as SUSE uses functions that are not async-signal-safe in the signal handler for login timeouts, which allows remote attackers to cause a denial of service (connection slot exhaustion) via multiple login attempts. NOTE: this issue exists because of an incorrect fix for CVE-2006-5051.. EPSS estimates a 28.60% chance of exploitation in the next 30 days.

Description

A certain Debian patch for OpenSSH before 4.3p2-9etch3 on etch; before 4.6p1-1 on sid and lenny; and on other distributions such as SUSE uses functions that are not async-signal-safe in the signal handler for login timeouts, which allows remote attackers to cause a denial of service (connection slot exhaustion) via multiple login attempts. NOTE: this issue exists because of an incorrect fix for CVE-2006-5051.

Metrics

EPSS Probability
28.60%

97.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpenbsdOpenssh<= 4.3p2
OpenbsdOpenssh1.2
OpenbsdOpenssh1.2.1
OpenbsdOpenssh1.2.2
OpenbsdOpenssh1.2.3
OpenbsdOpenssh1.2.27
OpenbsdOpenssh1.3
OpenbsdOpenssh1.5
OpenbsdOpenssh1.5.7
OpenbsdOpenssh1.5.8
OpenbsdOpenssh2
OpenbsdOpenssh2.1
OpenbsdOpenssh2.1.1
OpenbsdOpenssh2.2
OpenbsdOpenssh2.3
OpenbsdOpenssh2.3.1
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

Showing 50 of 68 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2008-4109?
A certain Debian patch for OpenSSH before 4.3p2-9etch3 on etch; before 4.6p1-1 on sid and lenny; and on other distributions such as SUSE uses functions that are not async-signal-safe in the signal handler for login timeouts, which allows remote attackers to cause a denial of service (connection slot exhaustion) via multiple login attempts. NOTE: this issue exists because of an incorrect fix for CVE-2006-5051.
How severe is CVE-2008-4109?
Severity scoring for CVE-2008-4109 is pending analysis. The EPSS model estimates a 28.60% probability of exploitation in the next 30 days.
How do I fix CVE-2008-4109?
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.

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Source: NVD / NIST