// For flags

CVE-2021-20236

 

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 the ZeroMQ server in versions before 4.3.3. This flaw allows a malicious client to cause a stack buffer overflow on the server by sending crafted topic subscription requests and then unsubscribing. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Se encontró un fallo en el servidor ZeroMQ en versiones anteriores a 4.3.3. Este fallo permite a un cliente malicioso causar un desbordamiento del búfer de pila en el servidor mediante el envío de peticiones de suscripción de temas diseñadas y luego cancelando la suscripción. La mayor amenaza de esta vulnerabilidad es la confidencialidad, la integridad y la disponibilidad del sistema

*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
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-17 CVE Reserved
  • 2021-05-28 CVE Published
  • 2024-02-11 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')
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Zeromq
Search vendor "Zeromq"
 Zeromq
Search vendor "Zeromq" for product "Zeromq"
 < 4.3.3
Search vendor "Zeromq" for product "Zeromq" and version " < 4.3.3"
-
Affected
Redhat
Search vendor "Redhat"
 Ceph Storage
Search vendor "Redhat" for product "Ceph Storage"
 2.0
Search vendor "Redhat" for product "Ceph Storage" and version "2.0"
-
Affected
Redhat
Search vendor "Redhat"
 Enterprise Linux
Search vendor "Redhat" for product "Enterprise Linux"
 7.0
Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 33
Search vendor "Fedoraproject" for product "Fedora" and version "33"
-
Affected