Vulnerability-Lookup

FKIE_CVE-2025-34271

Vulnerability from fkie_nvd - Published: 2025-10-30 22:15 - Updated: 2026-06-17 09:13

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the cluster manager component when requesting sensitive credentials from peer nodes over an unencrypted channel even when SSL/TLS is enabled in the product configuration. As a result, an attacker positioned on the network path can intercept credentials in transit. Captured credentials could allow the attacker to authenticate as a cluster node or service account, enabling further unauthorized access, lateral movement, or system compromise.

References

URL	Tags
disclosure@vulncheck.com	https://www.nagios.com/changelog/#log-server	Release Notes
disclosure@vulncheck.com	https://www.nagios.com/products/security/#log-server-2024R2	Vendor Advisory
disclosure@vulncheck.com	https://www.vulncheck.com/advisories/nagios-log-server-cluster-manager-credential-requests-sent-over-plaintext	Third Party Advisory

Impacted products

Vendor	Product	Version
nagios	log_server	*
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024
nagios	log_server	2024

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Cluster manager credential request/replication API"
          ],
          "product": "Log Server",
          "vendor": "Nagios",
          "versions": [
            {
              "lessThan": "2024R2.0.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
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              "versionEndExcluding": "2024",
              "vulnerable": true
            },
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              "matchCriteriaId": "B93D415C-B2C0-42CE-B9B3-29C29A3DCC16",
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            },
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            },
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              "vulnerable": true
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              "vulnerable": true
            },
            {
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              "matchCriteriaId": "DB3DFA03-0D49-4E43-9041-D7C30615B3D5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nagios Log Server versions prior to\u00a02024R2.0.2 contain a vulnerability in the cluster manager component when requesting sensitive credentials from peer nodes over an unencrypted channel even when SSL/TLS is enabled in the product configuration. As a result, an attacker positioned on the network path can intercept credentials in transit. Captured credentials could allow the attacker to authenticate as a cluster node or service account, enabling further unauthorized access, lateral movement, or system compromise."
    }
  ],
  "id": "CVE-2025-34271",
  "lastModified": "2026-06-17T09:13:46.653",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-34271",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
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              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-10-31T15:14:19.413150Z",
          "version": "2.0.3"
        }
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    ]
  },
  "published": "2025-10-30T22:15:47.673",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://www.nagios.com/changelog/#log-server"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.nagios.com/products/security/#log-server-2024R2"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
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      ],
      "url": "https://www.vulncheck.com/advisories/nagios-log-server-cluster-manager-credential-requests-sent-over-plaintext"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
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        {
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          "value": "CWE-319"
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  ]
}

CVE-2025-34271 (GCVE-0-2025-34271)

Vulnerability from cvelistv5 – Published: 2025-10-30 21:22 – Updated: 2025-11-17 21:36

Title

Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext

Summary

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-31 15:14 UTC

CWE

CWE-319 - Cleartext Transmission of Sensitive Information

Assigner

VulnCheck mitre root

References

3 references

URL	Tags
https://www.nagios.com/products/security/#log-ser…	vendor-advisorypatch
https://www.nagios.com/changelog/#log-server	release-notespatch
https://www.vulncheck.com/advisories/nagios-log-s…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Nagios	Log Server	Affected: 0 , < 2024R2.0.2 (custom) cpe:2.3:a:nagios:log_server:2024:::::::*

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
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                "id": "CVE-2025-34271",
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-31T15:14:19.413150Z",
                "version": "2.0.3"
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              "version": "0",
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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.

Detection rules are retrieved from Rulezet.

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.