Vulnerability-Lookup

FKIE_CVE-2024-6594

Vulnerability from fkie_nvd - Published: 2024-09-25 12:15 - Updated: 2026-08-08 00:16

Severity

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

Summary

Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands.

References

URL	Tags
5d1c2695-1a31-4499-88ae-e847036fd7e3	https://psirt.watchguard.com/CVE-2024-6594
5d1c2695-1a31-4499-88ae-e847036fd7e3	https://www.redteam-pentesting.de/advisories/rt-sa-2024-008
5d1c2695-1a31-4499-88ae-e847036fd7e3	https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00016	Vendor Advisory

Impacted products

	Vendor	Product	Version
	watchguard	single_sign-on_client	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "SSO Client",
          "vendor": "WatchGuard",
          "versions": [
            {
              "lessThanOrEqual": "12.7",
              "status": "affected",
              "version": "12.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:watchguard:single_sign-on_client:*:*:*:*:*:windows:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "single_sign-on_client",
          "vendor": "watchguard",
          "versions": [
            {
              "lessThanOrEqual": "12.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:watchguard:single_sign-on_client:*:*:*:*:*:windows:*:*",
              "matchCriteriaId": "17A19E9E-0672-4673-BD4F-681E4C994EE7",
              "versionEndIncluding": "12.7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands."
    },
    {
      "lang": "es",
      "value": "La vulnerabilidad de manejo inadecuado de condiciones excepcionales en WatchGuard Single Sign-On Client en Windows hace que el cliente se bloquee mientras maneja comandos malformados. Un atacante con acceso de red al cliente podr\u00eda crear una condici\u00f3n de denegaci\u00f3n de servicio para el servicio de inicio de sesi\u00f3n \u00fanico al emitir repetidamente comandos malformados. Este problema afecta al cliente de inicio de sesi\u00f3n \u00fanico: hasta la versi\u00f3n 12.7."
    }
  ],
  "id": "CVE-2024-6594",
  "lastModified": "2026-08-08T00:16:33.567",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "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:N/VI:N/VA:H/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": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-6594",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-25T13:44:40.431549Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-09-25T12:15:05.397",
  "references": [
    {
      "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
      "url": "https://psirt.watchguard.com/CVE-2024-6594"
    },
    {
      "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
      "url": "https://www.redteam-pentesting.de/advisories/rt-sa-2024-008"
    },
    {
      "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00016"
    }
  ],
  "sourceIdentifier": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ],
      "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-6594 (GCVE-0-2024-6594)

Vulnerability from cvelistv5 – Published: 2024-09-25 11:22 – Updated: 2026-08-07 23:42

Title

WatchGuard Firebox Single Sign-On Client Denial-of-Service

Summary

Severity

8.7 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-25 13:44 UTC

CWE

CWE-755

Assigner

WatchGuard CNA under the mitre root

CNA scorecard A 91/100 over 73 records in the last 180 days details

References

3 references

URL	Tags
https://www.redteam-pentesting.de/advisories/rt-s…	technical-description
https://psirt.watchguard.com/CVE-2024-6594	vendor-advisory
https://www.watchguard.com/wgrd-psirt/advisory/wg…	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
WatchGuard	SSO Client	Affected: 12.0 , ≤ 12.7 (semver) cpe:2.3:a:watchguard:sso_client::::::::
watchguard	single_sign-on_client	Affected: 0 , ≤ 12.7 (semver) cpe:2.3:a:watchguard:single_sign-on_client::::::windows::*

Date Public

2024-09-25 11:22

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:watchguard:single_sign-on_client:*:*:*:*:*:windows:*:*"
            ],
            "defaultStatus": "unaffected",
            "product": "single_sign-on_client",
            "vendor": "watchguard",
            "versions": [
              {
                "lessThanOrEqual": "12.7",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-6594",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-25T13:44:40.431549Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-25T14:30:29.866Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "SSO Client",
          "vendor": "WatchGuard",
          "versions": [
            {
              "lessThanOrEqual": "12.7",
              "status": "affected",
              "version": "12.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:watchguard:sso_client:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "12.7",
                  "versionStartIncluding": "12.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "datePublic": "2024-09-25T11:22:45.610Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "WatchGuard is not aware of any exploitation of this vulnerability in the wild."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-755",
              "description": "CWE-755",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-07T23:42:26.069Z",
        "orgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
        "shortName": "WatchGuard"
      },
      "references": [
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://www.redteam-pentesting.de/advisories/rt-sa-2024-008"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://psirt.watchguard.com/CVE-2024-6594"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00016"
        }
      ],
      "title": "WatchGuard Firebox Single Sign-On Client Denial-of-Service",
      "workarounds": [
        {
          "lang": "en",
          "value": "An attacker must have already established network access to exploit this vulnerability. WatchGuard recommends using Windows Firewall rules to restrict TCP port 4116 network access to the Single Sign-On Client to only allow connections from the Authentication Gateway (SSO Agent). Windows administrators can use Group Policy objects to add Windows firewall rules to their endpoints."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
    "assignerShortName": "WatchGuard",
    "cveId": "CVE-2024-6594",
    "datePublished": "2024-09-25T11:22:45.610Z",
    "dateReserved": "2024-07-09T02:09:05.229Z",
    "dateUpdated": "2026-08-07T23:42:26.069Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

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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.
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