CVE-2021-23428— Directory Traversal
Quick assessment
Affected
n/a elFinder.NetCore
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
elFinder是一套基于Drupal平台的、开源的AJAX文件管理器。该产品提供多文件上传、图像缩放等功能。 Snyk中的elFinder.NetCore所有版本存在安全漏洞，该漏洞由于缺少对用户输入的检查和对生成路径的检查，攻击者有可能通过路径遍历来转义Files目录。
Possible ATT&CK Techniques 1 AI
T1083 · File and Directory Discovery
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I. Basic Information for CVE-2021-23428
Vulnerability Information
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Vulnerability Title
Directory Traversal
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
elFinder 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
elFinder是一套基于Drupal平台的、开源的AJAX文件管理器。该产品提供多文件上传、图像缩放等功能。 Snyk中的elFinder.NetCore所有版本存在安全漏洞，该漏洞由于缺少对用户输入的检查和对生成路径的检查，攻击者有可能通过路径遍历来转义Files目录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | elFinder.NetCore | 0 ~ unspecified | - |
|
II. Public POCs for CVE-2021-23428
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-23428 (1)
-
https://snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1313838 x_refsource_MISC
Other References for CVE-2021-23428 (2)
-
https://github.com/gordon-matt/elFinder.NetCore x_refsource_MISC
Same Patch Batch · n/a · 2021-09-01 · 37 CVEs total
| CVE-2021-23427 | 8.6 HIGH | Arbitrary File Write via Archive Extraction (Zip Slip) |
| CVE-2021-23426 | 5.6 MEDIUM | Prototype Pollution |
| CVE-2021-23436 | 5.6 MEDIUM | Prototype Pollution |
| CVE-2021-23438 | 5.6 MEDIUM | Prototype Pollution |
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| CVE-2021-40350 | Christie Digital DWU850-GS 授权问题漏洞 | |
| CVE-2021-35508 | TeraRecon AQNetClient安全漏洞 | |
| CVE-2021-39379 | Open Solutions For Education openSIS SQL注入漏洞 | |
| CVE-2021-39377 | Open Solutions For Education openSIS SQL注入漏洞 | |
| CVE-2021-39373 | Samsung H3安全漏洞 | |
| CVE-2021-40382 | Compro Camera 安全漏洞 | |
| CVE-2021-40352 | OpenEMR 日志信息泄露漏洞 | |
| CVE-2021-38703 | KPN Experia WiFi 安全漏洞 | |
| CVE-2020-9002 | iPortalis 输入验证错误漏洞 | |
| CVE-2020-9000 | iPortalis 资源管理错误漏洞 | |
| CVE-2021-33582 | Cyrus IMAP 加密问题漏洞 | |
| CVE-2021-37415 | ZOHO ManageEngine ServiceDesk Plus 访问控制错误漏洞 | |
| CVE-2021-36235 | Ivanti Workspace Control 授权问题漏洞 | |
| CVE-2021-40353 | Open Solutions For Education openSIS SQL注入漏洞 | |
| CVE-2020-20341 | Yzmcms 代码问题漏洞 |
Showing top 20 of 37 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-23428
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