Vulnerability-Lookup

CNVD-2021-92457

Vulnerability from cnvd - Published: 2021-11-30

Title

Dell SupportAssist Client Consumer任意文件删除漏洞

Description

Dell SupportAssist Client是美国戴尔（DELL）公司的一款客户端应用程序。该程序提供自动化、主动和预测性技术进行故障排除等。 Dell SupportAssist Client Consumer 3.9.13.0及之前版本存在任意文件删除漏洞。攻击者可通过使用NTFS的Windows功能利用该漏洞删除任意文件。

Severity

低

Patch Name

Dell SupportAssist Client Consumer任意文件删除漏洞的补丁

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.dell.com/support/kbdoc/en-us/000191057/dsa-2021-163-dell-supportassist-client-consumer-security-update-for-two-vulnerabilities

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-36286

Impacted products

Name
DELL SupportAssist Client Consumer <=3.9.13.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-36286",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-36286"
    }
  },
  "description": "Dell SupportAssist Client\u662f\u7f8e\u56fd\u6234\u5c14\uff08DELL\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002\u8be5\u7a0b\u5e8f\u63d0\u4f9b\u81ea\u52a8\u5316\u3001\u4e3b\u52a8\u548c\u9884\u6d4b\u6027\u6280\u672f\u8fdb\u884c\u6545\u969c\u6392\u9664\u7b49\u3002\n\nDell SupportAssist Client Consumer 3.9.13.0\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u4efb\u610f\u6587\u4ef6\u5220\u9664\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u4f7f\u7528NTFS\u7684Windows\u529f\u80fd\u5229\u7528\u8be5\u6f0f\u6d1e\u5220\u9664\u4efb\u610f\u6587\u4ef6\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.dell.com/support/kbdoc/en-us/000191057/dsa-2021-163-dell-supportassist-client-consumer-security-update-for-two-vulnerabilities",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-92457",
  "openTime": "2021-11-30",
  "patchDescription": "Dell SupportAssist Client\u662f\u7f8e\u56fd\u6234\u5c14\uff08DELL\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002\u8be5\u7a0b\u5e8f\u63d0\u4f9b\u81ea\u52a8\u5316\u3001\u4e3b\u52a8\u548c\u9884\u6d4b\u6027\u6280\u672f\u8fdb\u884c\u6545\u969c\u6392\u9664\u7b49\u3002\r\n\r\nDell SupportAssist Client Consumer 3.9.13.0\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u4efb\u610f\u6587\u4ef6\u5220\u9664\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u4f7f\u7528NTFS\u7684Windows\u529f\u80fd\u5229\u7528\u8be5\u6f0f\u6d1e\u5220\u9664\u4efb\u610f\u6587\u4ef6\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": "Dell SupportAssist Client Consumer\u4efb\u610f\u6587\u4ef6\u5220\u9664\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "DELL SupportAssist Client Consumer \u003c=3.9.13.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-36286",
  "serverity": "\u4f4e",
  "submitTime": "2021-09-29",
  "title": "Dell SupportAssist Client Consumer\u4efb\u610f\u6587\u4ef6\u5220\u9664\u6f0f\u6d1e"
}

CVE-2021-36286 (GCVE-0-2021-36286)

Vulnerability from cvelistv5 – Published: 2021-09-28 19:20 – Updated: 2024-09-16 19:25

Summary

Dell SupportAssist Client Consumer versions 3.9.13.0 and any versions prior to 3.9.13.0 contain an arbitrary file deletion vulnerability that can be exploited by using the Windows feature of NTFS called Symbolic links. Symbolic links can be created by any(non-privileged) user under some object directories, but by themselves are not sufficient to successfully escalate privileges. However, combining them with a different object, such as the NTFS junction point allows for the exploitation. Support assist clean files functionality do not distinguish junction points from the physical folder and proceeds to clean the target of the junction that allows nonprivileged users to create junction points and delete arbitrary files on the system which can be accessed only by the admin.

Severity ?

7.1 (High)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

dell

References

URL

Tags

https://www.dell.com/support/kbdoc/en-us/00019105…

x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Dell	SupportAssist Client Consumer	Affected: unspecified , ≤ 3.9.13.0 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:54:50.744Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.dell.com/support/kbdoc/en-us/000191057/dsa-2021-163-dell-supportassist-client-consumer-security-update-for-two-vulnerabilities"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "SupportAssist Client Consumer",
          "vendor": "Dell",
          "versions": [
            {
              "lessThanOrEqual": "3.9.13.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-08-31T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "Dell SupportAssist Client Consumer versions 3.9.13.0 and any versions prior to 3.9.13.0 contain an arbitrary file deletion vulnerability that can be exploited by using the Windows feature of NTFS called Symbolic links. Symbolic links can be created by any(non-privileged) user under some object directories, but by themselves are not sufficient to successfully escalate privileges. However, combining them with a different object, such as the NTFS junction point allows for the exploitation. Support assist clean files functionality do not distinguish junction points from the physical folder and proceeds to clean the target of the junction that allows nonprivileged users to create junction points and delete arbitrary files on the system which can be accessed only by the admin."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-09-28T19:20:27",
        "orgId": "c550e75a-17ff-4988-97f0-544cde3820fe",
        "shortName": "dell"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.dell.com/support/kbdoc/en-us/000191057/dsa-2021-163-dell-supportassist-client-consumer-security-update-for-two-vulnerabilities"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secure@dell.com",
          "DATE_PUBLIC": "2021-08-31",
          "ID": "CVE-2021-36286",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "SupportAssist Client Consumer",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_value": "3.9.13.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Dell"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Dell SupportAssist Client Consumer versions 3.9.13.0 and any versions prior to 3.9.13.0 contain an arbitrary file deletion vulnerability that can be exploited by using the Windows feature of NTFS called Symbolic links. Symbolic links can be created by any(non-privileged) user under some object directories, but by themselves are not sufficient to successfully escalate privileges. However, combining them with a different object, such as the NTFS junction point allows for the exploitation. Support assist clean files functionality do not distinguish junction points from the physical folder and proceeds to clean the target of the junction that allows nonprivileged users to create junction points and delete arbitrary files on the system which can be accessed only by the admin."
            }
          ]
        },
        "impact": {
          "cvss": {
            "baseScore": 7.1,
            "baseSeverity": "High",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.dell.com/support/kbdoc/en-us/000191057/dsa-2021-163-dell-supportassist-client-consumer-security-update-for-two-vulnerabilities",
              "refsource": "MISC",
              "url": "https://www.dell.com/support/kbdoc/en-us/000191057/dsa-2021-163-dell-supportassist-client-consumer-security-update-for-two-vulnerabilities"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c550e75a-17ff-4988-97f0-544cde3820fe",
    "assignerShortName": "dell",
    "cveId": "CVE-2021-36286",
    "datePublished": "2021-09-28T19:20:27.407420Z",
    "dateReserved": "2021-07-08T00:00:00",
    "dateUpdated": "2024-09-16T19:25:15.640Z",
    "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

CNVD-2021-92457

CVE-2021-36286 (GCVE-0-2021-36286)

Tags

Sightings

Nomenclature