cve-2021-35211
Vulnerability from cvelistv5
Published
2021-07-14 20:55
Modified
2024-09-16 18:24
Severity ?
Summary
Serv-U Remote Memory Escape Vulnerability
CISA Known exploited vulnerability
Data from the Known Exploited Vulnerabilities Catalog

Date added: 2021-11-03

Due date: 2021-11-17

Required action: Apply updates per vendor instructions.

Used in ransomware: Known

Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-35211

Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:33:51.183Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "platforms": [
            "Windows"
          ],
          "product": "Serv-U Managed File Transfer Server and Serv-U Secured FTP",
          "vendor": "SolarWinds",
          "versions": [
            {
              "lessThan": "15.2.3 HF1",
              "status": "affected",
              "version": "SolarWinds Serv-U",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "SolarWinds would like to thank the Microsoft Threat Intelligence Center (MSTIC) and Microsoft Offensive Security Research teams for reporting on the issue in a responsible manner."
        }
      ],
      "datePublic": "2021-07-13T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Memory Escape Vulnerability in Solarwinds Serv-U",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-07-14T20:55:25",
        "orgId": "49f11609-934d-4621-84e6-e02e032104d6",
        "shortName": "SolarWinds"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "SolarWinds has released a hotfix 15.2.3 HF2 It is suggested to upgrade to the latest hotfix as soon as possible"
        }
      ],
      "source": {
        "defect": [
          "CVE-2021-35211"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Serv-U Remote Memory Escape Vulnerability",
      "workarounds": [
        {
          "lang": "en",
          "value": "SolarWinds advises to disconnect Serv-U Server from internet until patched."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@solarwinds.com",
          "DATE_PUBLIC": "2021-07-13T16:16:00.000Z",
          "ID": "CVE-2021-35211",
          "STATE": "PUBLIC",
          "TITLE": "Serv-U Remote Memory Escape Vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Serv-U Managed File Transfer Server and Serv-U Secured FTP",
                      "version": {
                        "version_data": [
                          {
                            "platform": "Windows",
                            "version_affected": "\u003c",
                            "version_name": "SolarWinds Serv-U",
                            "version_value": "15.2.3 HF1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "SolarWinds"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "SolarWinds would like to thank the Microsoft Threat Intelligence Center (MSTIC) and Microsoft Offensive Security Research teams for reporting on the issue in a responsible manner."
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Memory Escape Vulnerability in Solarwinds Serv-U"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211",
              "refsource": "MISC",
              "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"
            },
            {
              "name": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit",
              "refsource": "MISC",
              "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "SolarWinds has released a hotfix 15.2.3 HF2 It is suggested to upgrade to the latest hotfix as soon as possible"
          }
        ],
        "source": {
          "defect": [
            "CVE-2021-35211"
          ],
          "discovery": "EXTERNAL"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "SolarWinds advises to disconnect Serv-U Server from internet until patched."
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "49f11609-934d-4621-84e6-e02e032104d6",
    "assignerShortName": "SolarWinds",
    "cveId": "CVE-2021-35211",
    "datePublished": "2021-07-14T20:55:25.167115Z",
    "dateReserved": "2021-06-22T00:00:00",
    "dateUpdated": "2024-09-16T18:24:37.073Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2021-35211",
      "cwes": "[\"CWE-787\"]",
      "dateAdded": "2021-11-03",
      "dueDate": "2021-11-17",
      "knownRansomwareCampaignUse": "Known",
      "notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-35211",
      "product": "Serv-U",
      "requiredAction": "Apply updates per vendor instructions.",
      "shortDescription": "SolarWinds Serv-U contains an unspecified memory escape vulnerability which can allow for remote code execution.",
      "vendorProject": "SolarWinds",
      "vulnerabilityName": "SolarWinds Serv-U Remote Code Execution Vulnerability"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-35211\",\"sourceIdentifier\":\"psirt@solarwinds.com\",\"published\":\"2021-07-14T21:15:08.090\",\"lastModified\":\"2023-08-08T14:22:24.967\",\"vulnStatus\":\"Analyzed\",\"cisaExploitAdd\":\"2021-11-03\",\"cisaActionDue\":\"2021-11-17\",\"cisaRequiredAction\":\"Apply updates per vendor instructions.\",\"cisaVulnerabilityName\":\"SolarWinds Serv-U Remote Code Execution Vulnerability\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability.\"},{\"lang\":\"es\",\"value\":\"Microsoft descubri\u00f3 una vulnerabilidad de ejecuci\u00f3n de c\u00f3digo remota (RCE) en el producto SolarWinds Serv-U usando una Vulnerabilidad de Escape de Memoria Remota. Si es explotado, un actor de la amenaza puede ser capaz de obtener acceso privilegiado a la m\u00e1quina que aloja Serv-U solamente. SolarWinds Serv-U Managed File Transfer y Serv-U Secure FTP para Windows versiones anteriores a 15.2.3 HF2 est\u00e1n afectados por esta vulnerabilidad\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":10.0,\"baseSeverity\":\"CRITICAL\"},\"exploitabilityScore\":3.9,\"impactScore\":6.0},{\"source\":\"psirt@solarwinds.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":9.0,\"baseSeverity\":\"CRITICAL\"},\"exploitabilityScore\":2.2,\"impactScore\":6.0}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:C/I:C/A:C\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\",\"baseScore\":10.0},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"15.2.3\",\"matchCriteriaId\":\"66A68531-7831-4875-B0AB-215C3E5A62B6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:solarwinds:serv-u:15.2.3:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"9E8B32A1-90C1-4901-9B66-FA72E5787450\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:solarwinds:serv-u:15.2.3:hotfix1:*:*:*:*:*:*\",\"matchCriteriaId\":\"92569E9A-911C-4704-A962-047FF5E0E2CF\"}]}]}],\"references\":[{\"url\":\"https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit\",\"source\":\"psirt@solarwinds.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211\",\"source\":\"psirt@solarwinds.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]}]}}"
  }
}


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.