// For flags

CVE-2021-33430

numpy: buffer overflow in the PyArray_NewFromDescr_int() in ctors.c

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

A Buffer Overflow vulnerability exists in NumPy 1.9.x in the PyArray_NewFromDescr_int function of ctors.c when specifying arrays of large dimensions (over 32) from Python code, which could let a malicious user cause a Denial of Service. NOTE: The vendor does not agree this is a vulneraility; In (very limited) circumstances a user may be able provoke the buffer overflow, the user is most likely already privileged to at least provoke denial of service by exhausting memory. Triggering this further requires the use of uncommon API (complicated structured dtypes), which is very unlikely to be available to an unprivileged user

** EN DISPUTA ** Se presenta una vulnerabilidad de desbordamiento del búfer en NumPy versión 1.9.x en la función PyArray_NewFromDescr_int del archivo ctors.c cuando son especificados arrays de grandes dimensiones (más de 32) desde el código de Python, lo que podría permitir a un usuario malicioso causar una Denegación de Servicio. NOTA: El proveedor no está de acuerdo en que esto sea una vulnerabilidad; en circunstancias (muy limitadas) un usuario puede ser capaz de provocar el desbordamiento del búfer, lo más probable es que el usuario ya tenga privilegios para al menos provocar la denegación de servicio agotando la memoria. Desencadenar esto requiere además el uso de una API poco común (dtypes estructurados complicados), que es muy poco probable que esté disponible para un usuario sin privilegios

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2021-05-20 CVE Reserved
  • 2021-12-17 CVE Published
  • 2024-02-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • 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
Numpy
Search vendor "Numpy"
 Numpy
Search vendor "Numpy" for product "Numpy"
 >= 1.9.0 <= 1.9.3
Search vendor "Numpy" for product "Numpy" and version " >= 1.9.0 <= 1.9.3"
-
Affected