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SnykCVELIST:CVE-2021-23428

HistorySep 01, 2021 - 2:30 p.m.

CVE-2021-23428 Directory Traversal

2021-09-0114:30:12

snyk

www.cve.org

cve-2021-23428

directory traversal

absolute file path

missing sanitation

user input

files directory

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

LOW

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

AI Score

9.7

Confidence

High

EPSS

0.003

Percentile

69.3%

JSON

This affects all versions of package elFinder.NetCore. The Path.Combine(…) method is used to create an absolute file path. Due to missing sanitation of the user input and a missing check of the generated path its possible to escape the Files directory via path traversal

CNA Affected

[
  {
    "product": "elFinder.NetCore",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]

References

github.com/gordon-matt/elFinder.NetCore

github.com/gordon-matt/elFinder.NetCore/blob/633da9a4d7d5c9baefd1730ee51bf7af54889600/elFinder.NetCore/Drivers/FileSystem/FileSystemDriver.cs%23L387

snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1313838

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

LOW

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

AI Score

9.7

Confidence

High

EPSS

0.003

Percentile

69.3%

JSON

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