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

Vulnerability from cvelistv5 – Published: 2016-12-15 22:00 – Updated: 2024-08-06 02:50
VLAI
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.
CWE
  • n/a
References
Date Public
2016-12-07 00:00
Show details on NVD website

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          "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"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:nagios:nagios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2C4E32CA-1439-4B07-BBB2-38DCD001BD6A",
                    "versionEndIncluding": "4.2.3",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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."
          },
          {
            "lang": "es",
            "value": "base/logging.c en Nagios Core en versiones anteriores a 4.2.4 permite a usuarios locales con acceso a una cuenta en el grupo nagios obtener privilegios a trav\u00e9s de un ataque de symlink al archivo de inicio de sesi\u00f3n. NOTA: esto puede ser aprovechado por atacantes remotos usando CVE-2016-9565."
          }
        ],
        "id": "CVE-2016-9566",
        "lastModified": "2026-05-06T22:30:45.220",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 7.2,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2016-12-15T22:59:00.537",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0211.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0212.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0213.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0214.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0258.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://rhn.redhat.com/errata/RHSA-2017-0259.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://seclists.org/fulldisclosure/2016/Dec/58"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/94919"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securitytracker.com/id/1037487"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Issue Tracking"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1402869"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "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"
          },
          {
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          },
          {
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              "Third Party Advisory"
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          },
          {
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            "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",
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              "Issue Tracking",
              "Patch"
            ],
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          },
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            "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"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-16T00:22:55Z",
      "cve": "CVE-2016-9566",
      "id": "CVE-2016-9566",
      "initial_release_date": "2023-02-15T04:55:36Z",
      "product_status:known_affected": "1",
      "product_status:recommended": "90",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-9566",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-9566.json",
      "version": "12"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

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Detection rules are retrieved from Rulezet.

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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.


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