Vulnerability-Lookup

CERTFR-2022-AVI-203

Vulnerability from certfr_avis - Published: 2022-03-04 - Updated: 2022-03-04

Une vulnérabilité a été découverte dans Sophos SSL VPN client. Elle permet à un attaquant de provoquer un déni de service, une atteinte à l'intégrité des données et une élévation de privilèges.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Sophos SSL VPN client pour Windows toutes versions

Sophos indique que les utilisateurs doivent migrer sur Sophos Connect v2 VPN client.

Impacted products

	Vendor	Product	Description

References

Title

Publication Time

Tags

Bulletin de sécurité Sophos sophos-sa-20220303-sslvpn-local-dos du 03 mars 2022

None

vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [],
  "affected_systems_content": "\u003cul\u003e \u003cli\u003eSophos SSL VPN client pour Windows toutes versions\u003c/li\u003e \u003c/ul\u003e \u003cp\u003eSophos indique que les utilisateurs doivent migrer sur\u00a0Sophos Connect v2 VPN client.\u003c/p\u003e ",
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-36809",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-36809"
    }
  ],
  "initial_release_date": "2022-03-04T00:00:00",
  "last_revision_date": "2022-03-04T00:00:00",
  "links": [],
  "reference": "CERTFR-2022-AVI-203",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2022-03-04T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
    },
    {
      "description": "D\u00e9ni de service"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Sophos SSL VPN client. Elle\npermet \u00e0 un attaquant de provoquer un d\u00e9ni de service, une atteinte \u00e0\nl\u0027int\u00e9grit\u00e9 des donn\u00e9es et une \u00e9l\u00e9vation de privil\u00e8ges.\n",
  "title": "Vuln\u00e9rabilit\u00e9 dans Sophos SSL VPN client",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Sophos sophos-sa-20220303-sslvpn-local-dos du 03 mars 2022",
      "url": "https://www.sophos.com/fr-fr/security-advisories/sophos-sa-20220303-sslvpn-local-dos"
    }
  ]
}

CVE-2021-36809 (GCVE-0-2021-36809)

Vulnerability from cvelistv5 – Published: 2022-03-07 23:45 – Updated: 2024-08-04 01:01

Summary

A local attacker can overwrite arbitrary files on the system with VPN client logs using administrator privileges, potentially resulting in a denial of service and data loss, in all versions of Sophos SSL VPN client.

Severity ?

6.1 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

CWE

Assigner

Sophos

References

URL

Tags

https://www.sophos.com/en-us/security-advisories/…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	Sophos	SSL VPN client	Affected: unspecified , ≤ 2.3.8.0 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:01:59.782Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.sophos.com/en-us/security-advisories/sophos-sa-20220303-sslvpn-local-dos"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "SSL VPN client",
          "vendor": "Sophos",
          "versions": [
            {
              "lessThanOrEqual": "2.3.8.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A local attacker can overwrite arbitrary files on the system with VPN client logs using administrator privileges, potentially resulting in a denial of service and data loss, in all versions of Sophos SSL VPN client."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-03-07T23:45:11",
        "orgId": "526a354d-e866-4174-ae7d-bac848e5c4c5",
        "shortName": "Sophos"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.sophos.com/en-us/security-advisories/sophos-sa-20220303-sslvpn-local-dos"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-alert@sophos.com",
          "ID": "CVE-2021-36809",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "SSL VPN client",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_value": "2.3.8.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Sophos"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A local attacker can overwrite arbitrary files on the system with VPN client logs using administrator privileges, potentially resulting in a denial of service and data loss, in all versions of Sophos SSL VPN client."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.sophos.com/en-us/security-advisories/sophos-sa-20220303-sslvpn-local-dos",
              "refsource": "CONFIRM",
              "url": "https://www.sophos.com/en-us/security-advisories/sophos-sa-20220303-sslvpn-local-dos"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "526a354d-e866-4174-ae7d-bac848e5c4c5",
    "assignerShortName": "Sophos",
    "cveId": "CVE-2021-36809",
    "datePublished": "2022-03-07T23:45:11",
    "dateReserved": "2021-07-19T00:00:00",
    "dateUpdated": "2024-08-04T01:01:59.782Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CERTFR-2022-AVI-203

Solution

CVE-2021-36809 (GCVE-0-2021-36809)

Tags

Sightings

Nomenclature