Vulnerability-Lookup

CNVD-2020-35959

Vulnerability from cnvd - Published: 2020-07-02

Title

Bitdefender Antivirus Free后置链接漏洞

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 1.0.17.178之前版本中存在后置链接漏洞，该漏洞源于程序未能正确处理符号链接。攻击者可利用该漏洞替换隔离文件，并将其恢复到需要较高权限的位置。

Severity

低

Patch Name

Bitdefender Antivirus Free后置链接漏洞的补丁

Patch Description

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-bitdefender-antivirus-free-va-8604/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-8103

Impacted products

Name
Bitdefender Bitdefender Antivirus Free <1.0.17.178

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-8103"
    }
  },
  "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 1.0.17.178\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5904\u7406\u7b26\u53f7\u94fe\u63a5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u66ff\u6362\u9694\u79bb\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u6062\u590d\u5230\u9700\u8981\u8f83\u9ad8\u6743\u9650\u7684\u4f4d\u7f6e\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-bitdefender-antivirus-free-va-8604/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-35959",
  "openTime": "2020-07-02",
  "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 1.0.17.178\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5904\u7406\u7b26\u53f7\u94fe\u63a5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u66ff\u6362\u9694\u79bb\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u6062\u590d\u5230\u9700\u8981\u8f83\u9ad8\u6743\u9650\u7684\u4f4d\u7f6e\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\u7684\u8865\u4e01",
  "products": {
    "product": "Bitdefender Bitdefender Antivirus Free \u003c1.0.17.178"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-8103",
  "serverity": "\u4f4e",
  "submitTime": "2020-06-08",
  "title": "Bitdefender Antivirus Free\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e"
}

CVE-2020-8103 (GCVE-0-2020-8103)

Vulnerability from cvelistv5 – Published: 2020-06-05 11:10 – Updated: 2024-09-16 23:36

Title

Link Resolution Privilege Escalation Vulnerability in Bitdefender Antivirus Free (VA-8604)

Summary

A vulnerability in the improper handling of symbolic links 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 1.0.17.178.

Severity

7.2 (High)


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

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	Bitdefender Antivirus Free	Affected: unspecified , < 1.0.17.178 (custom)

Date Public

2020-06-05 00:00

Credits

Ilias Dimopoulos of RedyOps Research Labs

Show details on NVD website

JSON

To clipboard

{
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T09:48:25.527Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-bitdefender-antivirus-free-va-8604/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Bitdefender Antivirus Free",
          "vendor": "Bitdefender",
          "versions": [
            {
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              "version": "unspecified",
              "versionType": "custom"
            }
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      "credits": [
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          "value": "Ilias Dimopoulos of\u202fRedyOps Research Labs"
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      ],
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.2,
            "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:H",
            "version": "3.1"
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      ],
      "problemTypes": [
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            {
              "cweId": "CWE-59",
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          "url": "https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-bitdefender-antivirus-free-va-8604/"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "An automatic update to Bitdefender Antivirus Free version 1.0.17.178 or newer fixes the issue."
        }
      ],
      "source": {
        "defect": [
          "VA-8604"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Link Resolution Privilege Escalation Vulnerability in Bitdefender Antivirus Free (VA-8604)",
      "x_generator": {
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      "x_legacyV4Record": {
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          "STATE": "PUBLIC",
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              "url": "https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-bitdefender-antivirus-free-va-8604/"
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.