CVE-2020-12819
Vulnerability from cvelistv5
Published
2024-12-19 07:40
Modified
2024-12-20 17:41
Summary
A heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiGate versions 5.6.12, 6.0.10, 6.2.4 and 6.4.1 and earlier may allow a remote attacker with valid SSL VPN credentials to crash the SSL VPN daemon by sending a large LCP packet, when tunnel mode is enabled. Arbitrary code execution may be theoretically possible, albeit practically very difficult to achieve in this context
Impacted products
Vendor Product Version
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-12819",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-12-20T16:45:10.916317Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-12-20T17:41:24.593Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:fortinet:fortios:6.4.1:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.2.4:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.2.3:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.2.2:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.2.1:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.2.0:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.10:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.9:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.8:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.7:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.6:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.5:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.4:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.3:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.2:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.1:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:6.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.12:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.11:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.10:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.9:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.8:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.7:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.6:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.5:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.4:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.3:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.2:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.1:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:5.6.0:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "FortiOS",
          "vendor": "Fortinet",
          "versions": [
            {
              "lessThanOrEqual": "6.4.1",
              "status": "affected",
              "version": "6.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.4",
              "status": "affected",
              "version": "6.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.10",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.6.12",
              "status": "affected",
              "version": "5.6.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiGate versions 5.6.12, 6.0.10, 6.2.4 and 6.4.1 and earlier may allow a remote attacker with valid SSL VPN credentials to crash the SSL VPN daemon by sending a large LCP packet, when tunnel mode is enabled. Arbitrary code execution may be theoretically possible, albeit practically very difficult to achieve in this context"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:U/RL:X/RC:X",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "Execute unauthorized code or commands",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T07:40:58.144Z",
        "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
        "shortName": "fortinet"
      },
      "references": [
        {
          "name": "https://fortiguard.com/advisory/FG-IR-20-082",
          "url": "https://fortiguard.com/advisory/FG-IR-20-082"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Please upgrade to FortiOS versions 5.6.13 or above. \r\nPlease upgrade to FortiOS versions 6.0.11 or above. \r\nPlease upgrade to FortiOS versions 6.2.5 or above. \r\nPlease upgrade to FortiOS versions 6.4.2 or above.\r\nWorkaround: \r\nDisable tunnel mode."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
    "assignerShortName": "fortinet",
    "cveId": "CVE-2020-12819",
    "datePublished": "2024-12-19T07:40:58.144Z",
    "dateReserved": "2020-05-12T00:00:00.000Z",
    "dateUpdated": "2024-12-20T17:41:24.593Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-12819\",\"sourceIdentifier\":\"psirt@fortinet.com\",\"published\":\"2024-12-19T08:15:11.770\",\"lastModified\":\"2024-12-19T08:15:11.770\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiGate versions 5.6.12, 6.0.10, 6.2.4 and 6.4.1 and earlier may allow a remote attacker with valid SSL VPN credentials to crash the SSL VPN daemon by sending a large LCP packet, when tunnel mode is enabled. Arbitrary code execution may be theoretically possible, albeit practically very difficult to achieve in this context\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@fortinet.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L\",\"baseScore\":5.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"psirt@fortinet.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-122\"}]}],\"references\":[{\"url\":\"https://fortiguard.com/advisory/FG-IR-20-082\",\"source\":\"psirt@fortinet.com\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.