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CVE-2021-31249

Quick assessment

Affected
n/a n/a
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Chiyu CHIYU BF-430等都是中国台湾七友科技（Chiyu）公司的一款为门禁、考勤系统等设备提供通讯的联网服务器。 CHIYU Technology Inc 的 BF-430、BF-431 和 BF-450M TCP/IP 转换器设备上存在安全漏洞，该漏洞源于缺乏对多个CGI组件上可用的参数重定向=的验证。

AI Predicted 7.5 Difficulty: Easy EPSS 18.00% · P97

Public Exploits 1

Nuclei · 1 CVE-2021-31249.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-31249

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A CRLF injection vulnerability was found on BF-430, BF-431, and BF-450M TCP/IP Converter devices from CHIYU Technology Inc due to a lack of validation on the parameter redirect= available on multiple CGI components.
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
多款Chiyu产品注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chiyu CHIYU BF-430等都是中国台湾七友科技（Chiyu）公司的一款为门禁、考勤系统等设备提供通讯的联网服务器。 CHIYU Technology Inc 的 BF-430、BF-431 和 BF-450M TCP/IP 转换器设备上存在安全漏洞，该漏洞源于缺乏对多个CGI组件上可用的参数重定向=的验证。
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
- n/a n/a -

II. Public POCs for CVE-2021-31249

# POC Description Source Link Shenlong Link
1 CHIYU TCP/IP Converter BF-430, BF-431, and BF-450 are susceptible to carriage return line feed injection. The redirect= parameter, available on multiple CGI components, is not properly validated, thus enabling an attacker to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-31249.yaml POC Details
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III. Intelligence Information for CVE-2021-31249

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Other References for CVE-2021-31249 (3)

Same Patch Batch · n/a · 2021-06-04 · 24 CVEs total

CVE-2020-36142 BloofoxCMS 路径遍历漏洞
CVE-2021-30475 libaom 缓冲区错误漏洞
CVE-2020-15077 OpenVPN 授权问题漏洞
CVE-2020-36382 OpenVPN 代码问题漏洞
CVE-2021-26994 NetApp Clustered Data ONTAP 安全漏洞
CVE-2021-3565 tpm2-tools 信任管理问题漏洞
CVE-2020-7469 FreeBSD 资源管理错误漏洞
CVE-2021-22516 Micro Focus Secure API Manager 日志信息泄露漏洞
CVE-2020-27301 Realtek RTL8710 缓冲区错误漏洞
CVE-2020-27302 Realtek RTL8710 缓冲区错误漏洞
CVE-2021-28091 Lasso 数据伪造问题漏洞
CVE-2021-33054 SOGo 数据伪造问题漏洞
CVE-2021-31250 CHIYU Technology BF-630W 跨站脚本漏洞
CVE-2020-36141 BloofoxCms 代码问题漏洞
CVE-2020-36140 BloofoxCms 跨站请求伪造漏洞
CVE-2020-36139 BloofoxCms 跨站脚本漏洞
CVE-2020-29322 D-Link DIR-880L 信息泄露漏洞
CVE-2020-29323 D-Link DIR-885L MFC 信息泄露漏洞
CVE-2020-29324 D-Link DIR-895L MFC 信息泄露漏洞
CVE-2020-29321 D-Link DIR-868L 信息泄露漏洞

Showing top 20 of 24 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2021-31249

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