CVE-2009-2904

Severity: medium (CVSS 6.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-10-01 · updated 2026-06-16
Weakness: CWE-16

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.

Affected products

OpenSSH: 4.3, 4.8

References

http://lists.fedoraproject.org/pipermail/package-announce/2010-March/038214.html
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://osvdb.org/58495
http://secunia.com/advisories/38794
http://secunia.com/advisories/38834
http://secunia.com/advisories/39182
http://www.securityfocus.com/bid/36552
http://www.vupen.com/english/advisories/2010/0528
https://bugzilla.redhat.com/show_bug.cgi?id=522141
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9862
https://rhn.redhat.com/errata/RHSA-2009-1470.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-March/038214.html

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