nagios: Privilege escalation issue
Published Dec 15, 2016
7.8
HIGHCVSS 3.0
EPSS 4.88%
Description
base/logging.c in Nagios Core before 4.2.4 allows local users with access to an account in the nagios group to gain root privileges via a symlink attack on the log file. NOTE: this can be leveraged by remote attackers using CVE-2016-9565.
Affected products
No data.
No data.
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6
nagios-0:3.5.1-9.el6
Fixed · RHSA-2017:0212
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7
nagios-0:3.5.1-9.el7
Fixed · RHSA-2017:0211
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7
nagios-0:3.5.1-9.el7
Fixed · RHSA-2017:0213
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7
nagios-0:3.5.1-9.el7
Fixed · RHSA-2017:0214
Red Hat Gluster Storage 3.1 for RHEL 6
nagios-0:3.5.1-9.el6
Fixed · RHSA-2017:0259
Red Hat Gluster Storage 3.1 for RHEL 7
nagios-0:3.5.1-9.el7
Fixed · RHSA-2017:0258
Red Hat Mobile Application Platform 4
nagios
Affected
Red Hat OpenStack Platform 10 (Newton)
nagios
Not affected
Red Hat OpenStack Platform 8 (Liberty)
nagios
Not affected
Red Hat OpenStack Platform 9 (Mitaka)
nagios
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 | nagios-0:3.5.1-9.el6 | Fixed | RHSA-2017:0212 |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 | nagios-0:3.5.1-9.el7 | Fixed | RHSA-2017:0211 |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | nagios-0:3.5.1-9.el7 | Fixed | RHSA-2017:0213 |
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | nagios-0:3.5.1-9.el7 | Fixed | RHSA-2017:0214 |
| Red Hat Gluster Storage 3.1 for RHEL 6 | nagios-0:3.5.1-9.el6 | Fixed | RHSA-2017:0259 |
| Red Hat Gluster Storage 3.1 for RHEL 7 | nagios-0:3.5.1-9.el7 | Fixed | RHSA-2017:0258 |
| Red Hat Mobile Application Platform 4 | nagios | Affected | n/a |
| Red Hat OpenStack Platform 10 (Newton) | nagios | Not affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | nagios | Not affected | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | nagios | Not affected | n/a |
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.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
AV:L/AC:L/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 1, 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 (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.88% (0.04885) | 91.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.88% (0.04885) | 90.91th | v5 (v2026.06.15) |
| Jun 3, 2026 | 8.60% (0.08602) | 92.56th | v4 (v2025.03.14) |
| May 24, 2026 | 4.49% (0.04490) | 89.24th | v4 (v2025.03.14) |
| Apr 1, 2026 | 8.60% (0.08602) | 92.38th | v4 (v2025.03.14) |
| Oct 10, 2025 | 10.76% (0.10763) | 92.97th | v4 (v2025.03.14) |
| Sep 11, 2025 | 11.97% (0.11970) | 93.53th | v4 (v2025.03.14) |
| Jul 27, 2025 | 9.60% (0.09600) | 92.51th | v4 (v2025.03.14) |
| Jul 20, 2025 | 11.97% (0.11970) | 93.43th | v4 (v2025.03.14) |
| Jun 23, 2025 | 9.60% (0.09600) | 92.48th | v4 (v2025.03.14) |
| Jun 22, 2025 | 11.37% (0.11370) | 93.22th | v4 (v2025.03.14) |
| Mar 30, 2025 | 19.43% (0.19432) | 94.91th | v4 (v2025.03.14) |
| Mar 29, 2025 | 22.85% (0.22854) | 93.36th | v4 (v2025.03.14) |
| Mar 17, 2025 | 19.43% (0.19432) | 94.91th | v4 (v2025.03.14) |
| Feb 12, 2025 | 48.29% (0.48293) | 97.62th | v3 (v2023.03.01) |
| Jan 14, 2025 | 52.80% (0.52800) | 97.74th | v3 (v2023.03.01) |
| Dec 17, 2024 | 55.78% (0.55782) | 97.79th | v3 (v2023.03.01) |
| Aug 28, 2023 | 92.89% (0.92889) | 98.65th | v3 (v2023.03.01) |
| Jun 11, 2023 | 93.34% (0.93336) | 98.63th | v3 (v2023.03.01) |
| May 2, 2023 | 92.58% (0.92580) | 98.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 91.60% (0.91597) | 98.29th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.65% (0.04650) | 89.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.65% (0.04650) | 87.98th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.65% (0.04650) | 74.34th | v2 (v2022.01.01) |
References (21)
- http://rhn.redhat.com/errata/RHSA-2017-0211.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2017-0212.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2017-0213.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2017-0214.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2017-0258.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2017-0259.html vendor-advisoryx_refsource_REDHAT
- http://seclists.org/fulldisclosure/2016/Dec/58 mailing-listx_refsource_FULLDISCMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/94919 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037487 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2016-9566 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1402869 x_refsource_CONFIRMIssue Tracking
- https://github.com/NagiosEnterprises/nagioscore/commit/c29557dec91eba2306f5fb11b8da4474ba63f8c4 x_refsource_CONFIRMIssue TrackingPatch
- https://legalhackers.com/advisories/Nagios-Exploit-Root-PrivEsc-CVE-2016-9566.html x_refsource_MISCExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00014.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2016-9566
- https://security.gentoo.org/glsa/201612-51 vendor-advisoryx_refsource_GENTOO
- https://security.gentoo.org/glsa/201702-26 vendor-advisoryx_refsource_GENTOO
- https://security.gentoo.org/glsa/201710-20 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-9566
- https://www.exploit-db.com/exploits/40921/ exploitx_refsource_EXPLOIT-DB
- https://www.nagios.org/projects/nagios-core/history/4x/ x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.