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CVE-2021-3466

Quick assessment

Affected
n/a libmicrohttpd
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNU libmicrohttpd是GNU开源的一个应用程序。将HTTP服务器作为另一个应用程序的一部分来运行。 GNU libmicrohttpd存在缓冲区错误漏洞，该漏洞源于缺失边界检查将导致缓冲区溢出，攻击者可利用该漏洞在使用libmicrohttpd的应用程序中写入任意数据。

AI Predicted 9.8 Difficulty: Easy EPSS 8.74% · P95

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-3466

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in libmicrohttpd. A missing bounds check in the post_process_urlencoded function leads to a buffer overflow, allowing a remote attacker to write arbitrary data in an application that uses libmicrohttpd. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Only version 0.9.70 is vulnerable.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
libmicrohttpd 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU libmicrohttpd是GNU开源的一个应用程序。将HTTP服务器作为另一个应用程序的一部分来运行。 GNU libmicrohttpd存在缓冲区错误漏洞，该漏洞源于缺失边界检查将导致缓冲区溢出，攻击者可利用该漏洞在使用libmicrohttpd的应用程序中写入任意数据。
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
- libmicrohttpd libmicrohttpd 0.9.70 -

II. Public POCs for CVE-2021-3466

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III. Intelligence Information for CVE-2021-3466

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Vendor Advisories for CVE-2021-3466 (2)

Mailing List Discussions for CVE-2021-3466 (2)

Same Patch Batch · n/a · 2021-03-25 · 43 CVEs total

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CVE-2021-26715 Michael Stepankin OpenID-Connect-Java-Spring-Server 代码问题漏洞
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CVE-2021-26597 NOKIA NetAct 18A 代码问题漏洞
CVE-2021-26596 NOKIA NetAct 18A 跨站脚本漏洞
CVE-2020-35502 Privoxy 安全漏洞
CVE-2021-20210 Privoxy 安全漏洞
CVE-2021-20211 Privoxy 安全漏洞
CVE-2021-20212 Privoxy 安全漏洞
CVE-2021-20213 Privoxy 代码问题漏洞
CVE-2021-20214 Privoxy 安全漏洞

Showing top 20 of 43 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: n/a
Same weakness: CWE-120

V. Comments for CVE-2021-3466

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