Vulnerability-Lookup

CNVD-2021-28729

Vulnerability from cnvd - Published: 2021-04-16

Title

Bitdefender Antivirus Free后置链接漏洞（CNVD-2021-28729）

Description

Bitdefender Antivirus Free是罗马尼亚比特梵德（Bitdefender）公司的一套主要提供网络威胁检测和勒索软件防护功能的免费版本杀毒软件。 Bitdefender Antivirus Free 1.0.17之前版本中存在后置链接漏洞。攻击者可利用该漏洞获取提升的权限。

Severity

中

Patch Name

Bitdefender Antivirus Free后置链接漏洞（CNVD-2021-28729）的补丁

Patch Description

Bitdefender Antivirus Free是罗马尼亚比特梵德（Bitdefender）公司的一套主要提供网络威胁检测和勒索软件防护功能的免费版本杀毒软件。 Bitdefender Antivirus Free 1.0.17之前版本中存在后置链接漏洞。攻击者可利用该漏洞获取提升的权限。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-in-bitdefender-antivirus-free-va-8387/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-8099

Impacted products

Name
Bitdefender Bitdefender Antivirus Free <1.0.17

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-8099"
    }
  },
  "description": "Bitdefender Antivirus Free\u662f\u7f57\u9a6c\u5c3c\u4e9a\u6bd4\u7279\u68b5\u5fb7\uff08Bitdefender\uff09\u516c\u53f8\u7684\u4e00\u5957\u4e3b\u8981\u63d0\u4f9b\u7f51\u7edc\u5a01\u80c1\u68c0\u6d4b\u548c\u52d2\u7d22\u8f6f\u4ef6\u9632\u62a4\u529f\u80fd\u7684\u514d\u8d39\u7248\u672c\u6740\u6bd2\u8f6f\u4ef6\u3002\n\nBitdefender Antivirus Free 1.0.17\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u63d0\u5347\u7684\u6743\u9650\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-in-bitdefender-antivirus-free-va-8387/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-28729",
  "openTime": "2021-04-16",
  "patchDescription": "Bitdefender Antivirus Free\u662f\u7f57\u9a6c\u5c3c\u4e9a\u6bd4\u7279\u68b5\u5fb7\uff08Bitdefender\uff09\u516c\u53f8\u7684\u4e00\u5957\u4e3b\u8981\u63d0\u4f9b\u7f51\u7edc\u5a01\u80c1\u68c0\u6d4b\u548c\u52d2\u7d22\u8f6f\u4ef6\u9632\u62a4\u529f\u80fd\u7684\u514d\u8d39\u7248\u672c\u6740\u6bd2\u8f6f\u4ef6\u3002\r\n\r\nBitdefender Antivirus Free 1.0.17\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u63d0\u5347\u7684\u6743\u9650\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Bitdefender Antivirus Free\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e\uff08CNVD-2021-28729\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Bitdefender Bitdefender Antivirus Free \u003c1.0.17"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-8099",
  "serverity": "\u4e2d",
  "submitTime": "2020-04-22",
  "title": "Bitdefender Antivirus Free\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e\uff08CNVD-2021-28729\uff09"
}

CVE-2020-8099 (GCVE-0-2020-8099)

Vulnerability from cvelistv5 – Published: 2020-04-21 10:40 – Updated: 2024-09-16 20:58

Title

Link Resolution Privilege Escalation Vulnerability in Bitdefender Antivirus Free (VA-8387)

Summary

A vulnerability in the improper handling of junctions in Bitdefender Antivirus Free can allow an unprivileged user to substitute a quarantined file, and restore it to a privileged location. This issue affects: Bitdefender Antivirus Free versions prior to 1.0.17.

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

Bitdefender mitre root

References

1 reference

URL	Tags
https://www.bitdefender.com/support/security-advi…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Bitdefender	Antivirus Free	Affected: unspecified , < 1.0.17 (custom)

Date Public

2020-04-21 00:00

Credits

Jimmy Bayne

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T09:48:25.657Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-in-bitdefender-antivirus-free-va-8387/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Antivirus Free",
          "vendor": "Bitdefender",
          "versions": [
            {
              "lessThan": "1.0.17",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Jimmy Bayne"
        }
      ],
      "datePublic": "2020-04-21T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the improper handling of junctions in Bitdefender Antivirus Free can allow an unprivileged user to substitute a quarantined file, and restore it to a privileged location. This issue affects: Bitdefender Antivirus Free versions prior to 1.0.17."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "LOW",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-59",
              "description": "CWE-59 Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-04-21T10:40:15.000Z",
        "orgId": "b3d5ebe7-963e-41fb-98e1-2edaeabb8f82",
        "shortName": "Bitdefender"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-in-bitdefender-antivirus-free-va-8387/"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "An automated update to version 1.0.17 or higher fixes the issue."
        }
      ],
      "source": {
        "advisory": "VA-8387",
        "discovery": "EXTERNAL"
      },
      "title": "Link Resolution Privilege Escalation Vulnerability in Bitdefender Antivirus Free (VA-8387)",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve-requests@bitdefender.com",
          "DATE_PUBLIC": "2020-04-21T09:00:00.000Z",
          "ID": "CVE-2020-8099",
          "STATE": "PUBLIC",
          "TITLE": "Link Resolution Privilege Escalation Vulnerability in Bitdefender Antivirus Free (VA-8387)"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Antivirus Free",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "1.0.17"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Bitdefender"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Jimmy Bayne"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability in the improper handling of junctions in Bitdefender Antivirus Free can allow an unprivileged user to substitute a quarantined file, and restore it to a privileged location. This issue affects: Bitdefender Antivirus Free versions prior to 1.0.17."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "LOW",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-59 Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-in-bitdefender-antivirus-free-va-8387/",
              "refsource": "MISC",
              "url": "https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-in-bitdefender-antivirus-free-va-8387/"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "An automated update to version 1.0.17 or higher fixes the issue."
          }
        ],
        "source": {
          "advisory": "VA-8387",
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b3d5ebe7-963e-41fb-98e1-2edaeabb8f82",
    "assignerShortName": "Bitdefender",
    "cveId": "CVE-2020-8099",
    "datePublished": "2020-04-21T10:40:15.465Z",
    "dateReserved": "2020-01-28T00:00:00.000Z",
    "dateUpdated": "2024-09-16T20:58:15.875Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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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.

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CNVD-2021-28729

CVE-2020-8099 (GCVE-0-2020-8099)

Tags

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Nomenclature

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