GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

FKIE_CVE-2021-3553

Vulnerability from fkie_nvd - Published: 2021-11-24 16:15 - Updated: 2026-06-17 04:05
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
A Server-Side Request Forgery (SSRF) vulnerability in the EPPUpdateService of Bitdefender Endpoint Security Tools allows an attacker to use the Endpoint Protection relay as a proxy for any remote host. This issue affects: Bitdefender Endpoint Security Tools versions prior to 6.6.27.390; versions prior to 7.1.2.33. Bitdefender Unified Endpoint for Linux versions prior to 6.2.21.160. Bitdefender GravityZone versions prior to 6.24.1-1.
References
cve-requests@bitdefender.comhttps://www.bitdefender.com/support/security-advisories/server-side-request-forgery-eppupdateservice-remote-config-file-va-9825/Broken Link
nvd@nist.govhttps://www.bitdefender.com/support/security-advisories/server-side-request-forgery-in-eppupdateservice-remote-config-file-va-9825/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.bitdefender.com/support/security-advisories/server-side-request-forgery-eppupdateservice-remote-config-file-va-9825/Broken Link
Impacted products
Vendor Product Version
bitdefender endpoint_security_tools *
bitdefender endpoint_security_tools *
bitdefender endpoint_security_tools *
bitdefender gravityzone 6.24.1-1
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Endpoint Security Tools",
          "vendor": "Bitdefender",
          "versions": [
            {
              "lessThan": "6.6.27.390",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "7.1.2.33",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Unified Endpoint for Linux",
          "vendor": "Bitdefender",
          "versions": [
            {
              "lessThan": "6.2.21.160",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "GravityZone",
          "vendor": "Bitdefender",
          "versions": [
            {
              "lessThan": "6.24.1-1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "cve-requests@bitdefender.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:linux:*:*",
              "matchCriteriaId": "99AA8EC8-07A3-4548-A51D-F7B4A2B58BDC",
              "versionEndExcluding": "6.2.21.160",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "60CD3395-8839-4682-B0AB-3014302A92DC",
              "versionEndExcluding": "6.6.27.390",
              "versionStartIncluding": "6.6.27.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B1087345-C896-4934-A019-552B2B9F303F",
              "versionEndExcluding": "7.1.2.33",
              "versionStartIncluding": "7.0.0.00",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:bitdefender:gravityzone:6.24.1-1:*:*:*:*:*:*:*",
              "matchCriteriaId": "7D891393-9AC4-434F-B1D1-2D1B2FA7C0C9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Server-Side Request Forgery (SSRF) vulnerability in the EPPUpdateService of Bitdefender Endpoint Security Tools allows an attacker to use the Endpoint Protection relay as a proxy for any remote host. This issue affects: Bitdefender Endpoint Security Tools versions prior to 6.6.27.390; versions prior to 7.1.2.33. Bitdefender Unified Endpoint for Linux versions prior to 6.2.21.160. Bitdefender GravityZone versions prior to 6.24.1-1."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de tipo Server-Side Request Forgery (SSRF) en EPPUpdateService de Bitdefender Endpoint Security Tools permite a un atacante usar el rel\u00e9 de Endpoint Protection como proxy para cualquier host remoto. Este problema afecta a: Las versiones de Bitdefender Endpoint Security Tools anteriores a 6.6.27.390; las versiones anteriores a 7.1.2.33. Las versiones de Bitdefender Unified Endpoint for Linux anteriores a 6.2.21.160. Versiones de Bitdefender GravityZone anteriores a 6.24.1-1"
    }
  ],
  "id": "CVE-2021-3553",
  "lastModified": "2026-06-17T04:05:20.183",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 3.6,
        "source": "cve-requests@bitdefender.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-11-24T16:15:13.733",
  "references": [
    {
      "source": "cve-requests@bitdefender.com",
      "tags": [
        "Broken Link"
      ],
      "url": "https://www.bitdefender.com/support/security-advisories/server-side-request-forgery-eppupdateservice-remote-config-file-va-9825/"
    },
    {
      "source": "nvd@nist.gov",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.bitdefender.com/support/security-advisories/server-side-request-forgery-in-eppupdateservice-remote-config-file-va-9825/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link"
      ],
      "url": "https://www.bitdefender.com/support/security-advisories/server-side-request-forgery-eppupdateservice-remote-config-file-va-9825/"
    }
  ],
  "sourceIdentifier": "cve-requests@bitdefender.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "cve-requests@bitdefender.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.