Vulnerability in OpenBSD OpenSSH
CVE-2009-2904
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.9 (Medium). Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.003 (22.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- OpenBSD OpenSSH — versions 4.3, 4.8
- Fedoraproject Fedora — versions 11
- Red Hat Enterprise Linux — versions 5
- Red Hat Enterprise Linux Desktop — versions 5
- Red Hat Enterprise Linux Eus — versions 5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secunia.com/advisories/38794 (third-party-advisory)
- lists.vmware.com/pipermail/security-announce/2010/000082.html (mailing-list)
- www.securityfocus.com/bid/36552 (vdb-entry)
- rhn.redhat.com/errata/RHSA-2009-1470.html (vendor-advisory, Vendor Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2010-March/038214.html (vendor-advisory)
- secunia.com/advisories/38834 (third-party-advisory)
- osvdb.org/58495 (vdb-entry)
- secunia.com/advisories/39182 (third-party-advisory)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:9862 (signature, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi
Frequently asked questions
- What is CVE-2009-2904?
- CVE-2009-2904 is a vulnerability in OpenBSD OpenSSH, classified under CWE-16. Published 2009-10-01.
- Is CVE-2009-2904 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.