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CVE-2009-2904

6.9 · MEDIUM

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 privile…

Published Oct 1, 2009openbsdCWE-16EPSS 0.32%

Overview

CVE-2009-2904 is a medium-severity vulnerability affecting openbsd openssh. It was published on October 1, 2009 and has a CVSS 2.0 base score of 6.9 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from openbsd. Update openssh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Reflists.fedoraproject.org/pipermail/package-announce/2010-March/038214.htmlReflists.vmware.com/pipermail/security-announce/2010/000082.htmlRefosvdb.org/58495Refsecunia.com/advisories/38794Refsecunia.com/advisories/38834Refsecunia.com/advisories/39182Refwww.securityfocus.com/bid/36552Refwww.vupen.com/english/advisories/2010/0528Refbugzilla.redhat.com/show_bug.cgi?id=522141Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9862

How CyberStrike helps

Frequently asked questions

What is CVE-2009-2904?

CVE-2009-2904 is a medium-severity vulnerability affecting openbsd openssh. It was published on October 1, 2009 and has a CVSS 2.0 base score of 6.9 (MEDIUM).

How severe is CVE-2009-2904?

This vulnerability has a CVSS 2.0 base score of 6.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-2904?

Check the references section for vendor advisories and patches from openbsd. Update openssh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-2904?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-2904 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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