Vulnerability-Lookup

CVE-2016-9566 (GCVE-0-2016-9566)

Vulnerability from cvelistv5 – Published: 2016-12-15 22:00 – Updated: 2024-08-06 02:50

Summary

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.

Severity

7.8 (High)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2333 records in the last 180 days details

References

18 references

URL	Tags
https://security.gentoo.org/glsa/201710-20	vendor-advisoryx_refsource_GENTOO
https://www.exploit-db.com/exploits/40921/	exploitx_refsource_EXPLOIT-DB
http://www.securityfocus.com/bid/94919	vdb-entryx_refsource_BID
https://github.com/NagiosEnterprises/nagioscore/c…	x_refsource_CONFIRM
http://rhn.redhat.com/errata/RHSA-2017-0258.html	vendor-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/201612-51	vendor-advisoryx_refsource_GENTOO
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
https://www.nagios.org/projects/nagios-core/history/4x/	x_refsource_CONFIRM
https://security.gentoo.org/glsa/201702-26	vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
http://rhn.redhat.com/errata/RHSA-2017-0259.html	vendor-advisoryx_refsource_REDHAT
http://www.securitytracker.com/id/1037487	vdb-entryx_refsource_SECTRACK
http://seclists.org/fulldisclosure/2016/Dec/58	mailing-listx_refsource_FULLDISC
https://bugzilla.redhat.com/show_bug.cgi?id=1402869	x_refsource_CONFIRM
https://legalhackers.com/advisories/Nagios-Exploi…	x_refsource_MISC
http://rhn.redhat.com/errata/RHSA-2017-0214.html	vendor-advisoryx_refsource_REDHAT
http://rhn.redhat.com/errata/RHSA-2017-0211.html	vendor-advisoryx_refsource_REDHAT

Date Public

2016-12-07 00:00

Show details on NVD website

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              "Issue Tracking",
              "Patch"
            ],
            "url": "https://github.com/NagiosEnterprises/nagioscore/commit/c29557dec91eba2306f5fb11b8da4474ba63f8c4"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Third Party Advisory"
            ],
            "url": "https://legalhackers.com/advisories/Nagios-Exploit-Root-PrivEsc-CVE-2016-9566.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00014.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://security.gentoo.org/glsa/201612-51"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://security.gentoo.org/glsa/201702-26"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://security.gentoo.org/glsa/201710-20"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://www.exploit-db.com/exploits/40921/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.nagios.org/projects/nagios-core/history/4x/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0211.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0212.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0213.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0214.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0258.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0259.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://seclists.org/fulldisclosure/2016/Dec/58"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/94919"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securitytracker.com/id/1037487"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Issue Tracking"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1402869"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Issue Tracking",
              "Patch"
            ],
            "url": "https://github.com/NagiosEnterprises/nagioscore/commit/c29557dec91eba2306f5fb11b8da4474ba63f8c4"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory"
            ],
            "url": "https://legalhackers.com/advisories/Nagios-Exploit-Root-PrivEsc-CVE-2016-9566.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00014.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201612-51"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201702-26"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201710-20"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.exploit-db.com/exploits/40921/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.nagios.org/projects/nagios-core/history/4x/"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-59"
              },
              {
                "lang": "en",
                "value": "CWE-264"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-06-28T11:34:18+00:00",
      "cve": "CVE-2016-9566",
      "id": "CVE-2016-9566",
      "initial_release_date": "2016-12-07T00:00:00+00:00",
      "product_status:fixed": "34",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "3",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "nagios: Privilege escalation issue",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-9566.json",
      "version": "3"
    }
  }
}

RHSA-2017:0258

Vulnerability from csaf_redhat - Published: 2017-02-07 11:16 - Updated: 2026-06-28 12:28

Summary

Red Hat Security Advisory: nagios security update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2016-9566.

CVE-2016-9566

A privilege escalation flaw was found in the way Nagios handled log files. An attacker able to control the Nagios logging configuration (the 'nagios' user/group) could use this flaw to elevate their privileges to root.

7.3 (High)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Fixed: 7 products

https://access.redhat.com/errata/RHSA-2017:0258

Open the full advisory

RHSA-2017:0259

Vulnerability from csaf_redhat - Published: 2017-02-07 11:16 - Updated: 2026-06-28 12:28

Summary

Red Hat Security Advisory: nagios security update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2016-9566.

CVE-2016-9566

7.3 (High)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Fixed: 9 products

https://access.redhat.com/errata/RHSA-2017:0259

Open the full advisory

SUSE-SU-2022:3576-1

Vulnerability from csaf_suse - Published: 2022-10-13 09:11 - Updated: 2026-09-20 14:41

Summary

Security update for icinga

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2016-9566.

CVE-2016-9566

7.3 (High)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Recommended: 48 products

Open the full advisory

SUSE-SU-2024:1629-1

Vulnerability from csaf_suse - Published: 2024-05-14 02:28 - Updated: 2026-09-20 15:49

Summary

Security update for SUSE Manager Client Tools Beta

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2016-9566.

CVE-2016-9566

7.3 (High)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Recommended: 163 products

Open the full advisory

UBUNTU-CVE-2016-9566 (CVE-2016-9566)

Vulnerability from osv_ubuntu – Published: 2016-12-15 00:00 – Updated: 2025-09-08 16:43 – Source website

Details

Severity

7.8 (High)


                    
                      CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2016-9566	REPORT
	https://ubuntu.com/security/notices/USN-3253-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2016-9566	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "nagios3",
            "binary_version": "3.5.1-1ubuntu1.1"
          },
          {
            "binary_name": "nagios3-cgi",
            "binary_version": "3.5.1-1ubuntu1.1"
          },
          {
            "binary_name": "nagios3-common",
            "binary_version": "3.5.1-1ubuntu1.1"
          },
          {
            "binary_name": "nagios3-core",
            "binary_version": "3.5.1-1ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "nagios3",
        "purl": "pkg:deb/ubuntu/nagios3@3.5.1-1ubuntu1.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.1-1ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.4.1-5ubuntu2",
        "3.4.1-5ubuntu3",
        "3.5.1-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "nagios3",
            "binary_version": "3.5.1.dfsg-2.1ubuntu1.1"
          },
          {
            "binary_name": "nagios3-cgi",
            "binary_version": "3.5.1.dfsg-2.1ubuntu1.1"
          },
          {
            "binary_name": "nagios3-common",
            "binary_version": "3.5.1.dfsg-2.1ubuntu1.1"
          },
          {
            "binary_name": "nagios3-core",
            "binary_version": "3.5.1.dfsg-2.1ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "nagios3",
        "purl": "pkg:deb/ubuntu/nagios3@3.5.1.dfsg-2.1ubuntu1.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.1.dfsg-2.1ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.5.1-1ubuntu4",
        "3.5.1.dfsg-2ubuntu1",
        "3.5.1.dfsg-2ubuntu2",
        "3.5.1.dfsg-2.1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2016-9566",
  "modified": "2025-09-08T16:43:56Z",
  "published": "2016-12-15T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-9566"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3253-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2016-9566"
    }
  ],
  "related": [
    "USN-3253-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2016-9566"
  ]
}

WID-SEC-W-2024-1103

Vulnerability from csaf_certbund - Published: 2016-12-15 23:00 - Updated: 2024-05-13 22:00

Summary

Nagios: Mehrere Schwachstellen

Severity

Hoch

Scope

2 vulnerabilities in this advisory, including CVE-2016-9566.

CVE-2016-9566

Es existiert eine Schwachstelle in Nagios Core in [base/logging.c]. Der Nagios Daemon öffnet seine Log-Datei bevor er die root Rechte beim Start aufgibt. Ein lokaler Angreifer aus der Gruppe "nagios" kann die Log-Datei durch einen Symlink auf eine beliebige Datei ersetzen, um dadurch root Rechte zu erlangen. In Kombination mit CVE-2016-9565 kann diese Schwachstelle auch von einem entfernten Angreifer ausgenutzt werden.

Known affected: 4 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2016-9566 (GCVE-0-2016-9566)

RHSA-2017:0258

RHSA-2017:0259

SUSE-SU-2022:3576-1

SUSE-SU-2024:1629-1

UBUNTU-CVE-2016-9566 (CVE-2016-9566)

WID-SEC-W-2024-1103

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Related by attack behaviour