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 sy
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.
- Published
- Dec 15, 2016
- Updated
- Jun 16, 2026
- EPSS
- 4.9% · 92th percentile
- CWE
- CWE-59
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Report tools
Action score
32
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 4.9%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| nagios | nagios | cpe:2.3:a:nagios:nagios |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- nagios nagiosup to 4.2.3 inclusive
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:7 | nagios3 | before 3.4.1-3+deb7u3 | 3.4.1-3+deb7u3 |
| Debian:8 | nagios3 | before 3.5.1.dfsg-2+deb8u1 | 3.5.1.dfsg-2+deb8u1 |
| openSUSE:Tumbleweed | nagios | before 4.4.6-2.5 | 4.4.6-2.5 |
| Red Hat:openstack:5::el6 | nagios | before 0:3.5.1-9.el6 | 0:3.5.1-9.el6 |
| Red Hat:openstack:5::el6 | nagios-common | before 0:3.5.1-9.el6 | 0:3.5.1-9.el6 |
| Red Hat:openstack:5::el6 | nagios-debuginfo | before 0:3.5.1-9.el6 | 0:3.5.1-9.el6 |
| Red Hat:openstack:5::el6 | nagios-devel | before 0:3.5.1-9.el6 | 0:3.5.1-9.el6 |
| Red Hat:openstack:5::el7 | nagios | before 0:3.5.1-9.el7 | 0:3.5.1-9.el7 |
| Red Hat:openstack:5::el7 | nagios-common | before 0:3.5.1-9.el7 | 0:3.5.1-9.el7 |
| Red Hat:openstack:5::el7 | nagios-debuginfo | before 0:3.5.1-9.el7 | 0:3.5.1-9.el7 |
| Red Hat:openstack:5::el7 | nagios-devel | before 0:3.5.1-9.el7 | 0:3.5.1-9.el7 |
| SUSE:Manager Client Tools 12 | grafana-ha-cluster-dashboards | before 1.1.0+git.1605027022.a84d536-1.10.1 | 1.1.0+git.1605027022.a84d536-1.10.1 |
| SUSE:Manager Client Tools 12 | grafana-sap-netweaver-dashboards | before 1.0.3+git.1601889366.9f71957-1.10.1 | 1.0.3+git.1601889366.9f71957-1.10.1 |
| SUSE:Manager Client Tools 12 | grafana-sap-providers | before 1.1-1.7.1 | 1.1-1.7.1 |
| SUSE:Manager Client Tools 12 | hwdata | before 0.314-10.14.1 | 0.314-10.14.1 |
| SUSE:Manager Client Tools 12 | icinga | before 1.13.3-12.6.1 | 1.13.3-12.6.1 |
| SUSE:Manager Client Tools 12 | icinga | before 1.13.3-12.8.1 | 1.13.3-12.8.1 |
| SUSE:Manager Client Tools 12 | sysuser-tools | before 2.0-1.9.1 | 2.0-1.9.1 |
| SUSE:Manager Client Tools 12 | zeromq | before 4.0.4-15.8.1 | 4.0.4-15.8.1 |
Same product
nagios: all recordsOther highest-scoring records for the same primary product.
- CVE-2009-2288statuswml.cgi in Nagios before 3.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) ping or (2) T55Plan
- CVE-2012-6096Multiple stack-based buffer overflows in the get_history function in history.cgi in Nagios Core before 3.4.4, and Icinga 1.6.x before 1.6.2,50Plan
- CVE-2016-9565MagpieRSS, as used in the front-end component in Nagios Core before 4.2.2 might allow remote attackers to read or write to arbitrary files b46Plan
- CVE-2002-1959Nagios 1.0b1 through 1.0b3 allows remote attackers to execute arbitrary commands via shell metacharacters in plugin output.41Plan
- CVE-2016-0726The Fedora Nagios package uses "nagiosadmin" as the default password for the "nagiosadmin" administrator account, which makes it easier for 40Plan
- CVE-2013-7108Multiple off-by-one errors in Nagios Core 3.5.1, 4.0.2, and earlier, and Icinga before 1.8.5, 1.9 before 1.9.4, and 1.10 before 1.10.2 allow40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:nagios3 | 3.5.1.dfsg-2+deb8u1 · Debian:8 | Package registry (OSV) |
| opensuse:nagios | 4.4.6-2.5 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:nagios | 0:3.5.1-9.el7 · Red Hat:openstack:5::el7 | Package registry (OSV) |
| red hat:nagios-common | 0:3.5.1-9.el7 · Red Hat:openstack:5::el7 | Package registry (OSV) |
| red hat:nagios-debuginfo | 0:3.5.1-9.el7 · Red Hat:openstack:5::el7 | Package registry (OSV) |
| red hat:nagios-devel | 0:3.5.1-9.el7 · Red Hat:openstack:5::el7 | Package registry (OSV) |
| suse:grafana-ha-cluster-dashboards | 1.1.0+git.1605027022.a84d536-1.10.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:grafana-sap-netweaver-dashboards | 1.0.3+git.1601889366.9f71957-1.10.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:grafana-sap-providers | 1.1-1.7.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:hwdata | 0.314-10.14.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:icinga | 1.13.3-12.6.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:sysuser-tools | 2.0-1.9.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
| suse:zeromq | 4.0.4-15.8.1 · SUSE:Manager Client Tools 12 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | local | 2016-12-15 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-1 d
- Published
- TodaySep 30, 2026+3576 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-59 · Improper Link Resolution Before File Access ('Link Following')CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
- Obfuscated Files or Information: HTML SmugglingT1027.006
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Autostart Execution:Shortcut ModificationT1547.009
- Hide Artifacts: Resource ForkingT1564.009
- Hijack Execution Flow: Executable Installer File Permissions WeaknessT1574.005
- Hijack Execution Flow: Services File Permissions WeaknessT1574.010
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- rhn.redhat.com/errata/RHSA-2017-0211.html
- rhn.redhat.com/errata/RHSA-2017-0212.html
- rhn.redhat.com/errata/RHSA-2017-0213.html
- rhn.redhat.com/errata/RHSA-2017-0214.html
- rhn.redhat.com/errata/RHSA-2017-0258.html
- rhn.redhat.com/errata/RHSA-2017-0259.html
- seclists.org/fulldisclosure/2016/Dec/58
- www.securityfocus.com/bid/94919
- www.securitytracker.com/id/1037487
- bugzilla.redhat.com/show_bug.cgi?id=1402869
- github.com/NagiosEnterprises/nagioscore/commit/c29557dec91eba2306f5fb11b8da4474ba63f8c4
- lists.debian.org/debian-lts-announce/2018/12/msg00014.html
- security.gentoo.org/glsa/201612-51
- security.gentoo.org/glsa/201702-26
- security.gentoo.org/glsa/201710-20
- www.exploit-db.com/exploits/40921/
- www.nagios.org/projects/nagios-core/history/4x/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.