// For flags

CVE-2021-3466

 

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se ha encontrado un fallo en libmicrohttpd. Una comprobación de límites ausente en la función post_process_urlencoded conduce a un desbordamiento del búfer, lo que permite a un atacante remoto escribir datos arbitrarios en una aplicación que utilice libmicrohttpd. La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos, así como la disponibilidad del sistema. Sólo la versión 0.9.70 es vulnerable

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-03-24 CVE Reserved
  • 2021-03-25 CVE Published
  • 2023-12-09 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Gnu
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Libmicrohttpd
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0.9.70
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-
Affected
Redhat
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Enterprise Linux
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6.0
Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"
-
Affected
Redhat
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Enterprise Linux
Search vendor "Redhat" for product "Enterprise Linux"
7.0
Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"
-
Affected
Redhat
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Enterprise Linux
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8.0
Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"
-
Affected
Fedoraproject
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Fedora
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32
Search vendor "Fedoraproject" for product "Fedora" and version "32"
-
Affected
Fedoraproject
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Fedora
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33
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-
Affected
Fedoraproject
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Fedora
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34
Search vendor "Fedoraproject" for product "Fedora" and version "34"
-
Affected