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CVE-2021-20123

Quick assessment

Affected
n/a Draytek VigorConnect
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Draytek VigorConnect是中国居易科技（Draytek）公司的一种易于使用、重量轻、用于 DrayTek 产品的单站点中央管理系统。 Draytek VigorConnect 中存在路径遍历漏洞，该漏洞源于产品的DownloadFileServlet的文件下载功能存在安全问题。攻击者可通过该漏洞下载操作系统中具有root权限的的文件。以下产品及版本受到影响：Draytek VigorConnect 1.6.0-B3。

AI Predicted 7.5 Difficulty: Easy KEV EPSS 90.23% · P100

Public Exploits 1

Nuclei · 1 CVE-2021-20123.yaml [template]
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I. Basic Information for CVE-2021-20123

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Draytek VigorConnect 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Draytek VigorConnect是中国居易科技（Draytek）公司的一种易于使用、重量轻、用于 DrayTek 产品的单站点中央管理系统。 Draytek VigorConnect 中存在路径遍历漏洞，该漏洞源于产品的DownloadFileServlet的文件下载功能存在安全问题。攻击者可通过该漏洞下载操作系统中具有root权限的的文件。以下产品及版本受到影响：Draytek VigorConnect 1.6.0-B3。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
- Draytek VigorConnect 1.6.0-B3 -

II. Public POCs for CVE-2021-20123

# POC Description Source Link Shenlong Link
1 Draytek VigorConnect 1.6.0-B3 is susceptible to local file inclusion in the file download functionality of the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20123.yaml POC Details
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III. Intelligence Information for CVE-2021-20123

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Other References for CVE-2021-20123 (1)

Same Patch Batch · n/a · 2021-10-13 · 20 CVEs total

CVE-2021-22035 Vmware VMware vRealize Log Insight 注入漏洞
CVE-2021-34814 Proofpoint Spam Engine 访问控制错误漏洞
CVE-2021-39304 Proofpoint Enterprise Protection 代码问题漏洞
CVE-2021-22033 vmware VMware vRealize Operations 代码问题漏洞
CVE-2021-20124 Draytek VigorConnect 路径遍历漏洞
CVE-2021-20125 Draytek VigorConnect 代码问题漏洞
CVE-2021-20126 Draytek VigorConnect 跨站请求伪造漏洞
CVE-2021-20127 Draytek VigorConnect 访问控制错误漏洞
CVE-2021-20128 Draytek VigorConnect 跨站脚本漏洞
CVE-2021-20129 Draytek VigorConnect 日志信息泄露漏洞
CVE-2021-41075 ZOHO ManageEngine OpManager SQL注入漏洞
CVE-2021-22036 Vmware VMware vRealize Log Insight 信息泄露漏洞
CVE-2021-40843 Proofpoint Insider Threat Management Server 代码问题漏洞
CVE-2021-40842 Proofpoint Insider Threat Management Server SQL注入漏洞
CVE-2021-20130 ZOHO ManageEngine ADManager Plus 代码问题漏洞
CVE-2021-20131 ZOHO ManageEngine ADManager Plus 代码问题漏洞
CVE-2021-42223 Online Dj Booking Management System 跨站脚本漏洞
CVE-2021-42224 Ifsc Code Finder Project SQL注入漏洞
CVE-2021-40493 ZOHO ManageEngine OpManager SQL注入漏洞

IV. Related Vulnerabilities

Same product: Draytek VigorConnect
Same vendor: n/a

V. Comments for CVE-2021-20123

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