CVE-2021-43523
Quick assessment
Affected
n/a n/a
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.
uclibc-ng是一个应用系统。用于Linux的小型C库。 uClibc 和 uClibc-ng 1.0.39 之前的版本中存在安全漏洞，该漏洞源于 DNS 服务器通过 gethostbyname、getaddrinfo、gethostbyaddr 和 getnameinfo 返回的域名中的特殊字符处理不当，导致输出错误的主机名（导致域劫持）或注入应用程序（导致远程代码执行、XSS、应用程序崩溃等）。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-43523
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In uClibc and uClibc-ng before 1.0.39, incorrect handling of special characters in domain names returned by DNS servers via gethostbyname, getaddrinfo, gethostbyaddr, and getnameinfo can lead to output of wrong hostnames (leading to domain hijacking) or injection into applications (leading to remote code execution, XSS, applications crashes, etc.). In other words, a validation step, which is expected in any stub resolver, does not occur.
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
uclibc-ng 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
uclibc-ng是一个应用系统。用于Linux的小型C库。 uClibc 和 uClibc-ng 1.0.39 之前的版本中存在安全漏洞，该漏洞源于 DNS 服务器通过 gethostbyname、getaddrinfo、gethostbyaddr 和 getnameinfo 返回的域名中的特殊字符处理不当，导致输出错误的主机名（导致域劫持）或注入应用程序（导致远程代码执行、XSS、应用程序崩溃等）。
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 |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2021-43523
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-43523 (1)
Mailing List Discussions for CVE-2021-43523 (1)
-
https://www.openwall.com/lists/oss-security/2021/11/09/1 x_refsource_MISC
Other References for CVE-2021-43523 (1)
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https://uclibc-ng.org/ x_refsource_MISC
Same Patch Batch · n/a · 2021-11-10 · 54 CVEs total
| CVE-2021-42111 | 5.5 MEDIUM | Rcdevs OpenOtp Ios Mobile Application 安全漏洞 |
| CVE-2021-32022 | BlackBerry UEM 安全漏洞 | |
| CVE-2021-39474 | Connect Box EuroDOCSIS 3.0 Voice Gateway 操作系统命令注入漏洞 | |
| CVE-2021-41427 | Beeline Smart Box 跨站脚本漏洞 | |
| CVE-2021-43562 | TYPO3 代码问题漏洞 | |
| CVE-2021-43563 | TYPO3 安全漏洞 | |
| CVE-2021-43564 | TYPO3 信息泄露漏洞 | |
| CVE-2021-43561 | TYPO3 跨站脚本漏洞 | |
| CVE-2020-28137 | Genexis Platinum 4410 跨站请求伪造漏洞 | |
| CVE-2021-3380 | ICREM H8 SSRMS 安全漏洞 | |
| CVE-2021-32021 | BlackBerry UEM 安全漏洞 | |
| CVE-2021-40520 | Airangel Hsmx Gateway 安全漏洞 | |
| CVE-2021-32023 | Blackberry Workspaces Server 安全漏洞 | |
| CVE-2021-22048 | VMware vCenter Server 权限许可和访问控制问题漏洞 | |
| CVE-2021-3572 | pip 输入验证错误漏洞 | |
| CVE-2020-23873 | Pdf2xml 缓冲区错误漏洞 | |
| CVE-2020-23872 | Pdf2xml 代码问题漏洞 | |
| CVE-2020-23874 | Pdf2xml 缓冲区错误漏洞 | |
| CVE-2020-23877 | pdf2xml 缓冲区错误漏洞 | |
| CVE-2020-23876 | Pdf2xml 安全漏洞 |
Showing top 20 of 54 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-43523
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