CVE-2009-2904

Name: CVE-2009-2904
Creator: NVD / NIST
Published: 2009-10-01T15:30:00.233+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.32%

Last modified Jun 16, 2026

CVE-2009-2904 is a vulnerability of currently unknown severity. A certain Red Hat modification to the ChrootDirectory feature in OpenSSH 4.8, as used in sshd in OpenSSH 4.3 in Red Hat Enterprise Linux (RHEL) 5.4 and Fedora 11, allows local users to gain privileges via hard links to setuid programs that use configuration files within the chroot directory, related to requirements for directory ownership.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

A certain Red Hat modification to the ChrootDirectory feature in OpenSSH 4.8, as used in sshd in OpenSSH 4.3 in Red Hat Enterprise Linux (RHEL) 5.4 and Fedora 11, allows local users to gain privileges via hard links to setuid programs that use configuration files within the chroot directory, related to requirements for directory ownership.

Metrics

EPSS Probability

0.32%

23.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-16

Affected Software

Vendor	Product	Versions
Openbsd	Openssh	4.3
Openbsd	Openssh	4.8

References

Timeline

Published: Oct 1, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-2904?

How severe is CVE-2009-2904?

Severity scoring for CVE-2009-2904 is pending analysis. The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2009-2904?

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-2009-2904?

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

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Source: NVD / NIST