openssh: possible privilege escalation when using ChrootDirectory setting
Published Oct 1, 2009
6.9
MEDIUMCVSS 2.0
EPSS 0.32%
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
No data.
Running on/with
- 11
- 5
- 5
- 5
No data.
Red Hat Enterprise Linux 5
openssh-0:4.3p2-36.el5_4.2
Fixed · RHSA-2009:1470
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | openssh-0:4.3p2-36.el5_4.2 | Fixed | RHSA-2009:1470 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.32% (0.00318) | 22.56th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.32% (0.00318) | 23.33th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00039) | 8.86th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.28% (0.01282) | 67.79th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.55% (0.01547) | 74.40th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (14)
- http://lists.fedoraproject.org/pipermail/package-announce/2010-March/038214.html vendor-advisoryx_refsource_FEDORA
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html mailing-listx_refsource_MLIST
- http://osvdb.org/58495 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/38794 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/38834 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/39182 third-party-advisoryx_refsource_SECUNIA
- http://www.securityfocus.com/bid/36552 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2010/0528 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2009-2904 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=522141 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-2904
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9862 vdb-entrysignaturex_refsource_OVAL
- https://rhn.redhat.com/errata/RHSA-2009-1470.html vendor-advisoryx_refsource_REDHATVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2009-2904
Change history (0)
No recorded changes yet.