CVE-2024-21502

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-21502
Versions of the package fastecdsa before 2.3.2 are vulnerable to Use of Uninitialized Variable on the stack, via the curvemath_mul function in src/curveMath.c, due to being used and interpreted as user-defined type. Depending on the variable's actual value it could be arbitrary free(), arbitrary realloc(), null pointer dereference and other. Since the stack can be controlled by the attacker, the vulnerability could be used to corrupt allocator structure, leading to possible heap exploitation. The attacker could cause denial of service by exploiting this vulnerability.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://gist.github.com/keltecc/49da037072276f21b005a8337c15db26 Exploit Third Party Advisory
https://github.com/AntonKueltz/fastecdsa/blob/v2.3.1/src/curveMath.c%23L210 Broken Link
https://github.com/AntonKueltz/fastecdsa/commit/57fc5689c95d649dab7ef60cc99ac64589f01e36 Patch
https://security.snyk.io/vuln/SNYK-PYTHON-FASTECDSA-6262045 Exploit Third Party Advisory
https://gist.github.com/keltecc/49da037072276f21b005a8337c15db26 Exploit Third Party Advisory
https://github.com/AntonKueltz/fastecdsa/blob/v2.3.1/src/curveMath.c%23L210 Broken Link
https://github.com/AntonKueltz/fastecdsa/commit/57fc5689c95d649dab7ef60cc99ac64589f01e36 Patch
https://security.snyk.io/vuln/SNYK-PYTHON-FASTECDSA-6262045 Exploit Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:antonkueltz:fastecdsa:*:*:*:*:*:*:*:*
History

12 Feb 2025, 18:49

Type Values Removed Values Added
CWE CWE-908
CPE cpe:2.3:a:antonkueltz:fastecdsa:*:*:*:*:*:*:*:*
First Time Antonkueltz fastecdsa
Antonkueltz
References () https://gist.github.com/keltecc/49da037072276f21b005a8337c15db26 - () https://gist.github.com/keltecc/49da037072276f21b005a8337c15db26 - Exploit, Third Party Advisory
References () https://github.com/AntonKueltz/fastecdsa/blob/v2.3.1/src/curveMath.c%23L210 - () https://github.com/AntonKueltz/fastecdsa/blob/v2.3.1/src/curveMath.c%23L210 - Broken Link
References () https://github.com/AntonKueltz/fastecdsa/commit/57fc5689c95d649dab7ef60cc99ac64589f01e36 - () https://github.com/AntonKueltz/fastecdsa/commit/57fc5689c95d649dab7ef60cc99ac64589f01e36 - Patch
References () https://security.snyk.io/vuln/SNYK-PYTHON-FASTECDSA-6262045 - () https://security.snyk.io/vuln/SNYK-PYTHON-FASTECDSA-6262045 - Exploit, Third Party Advisory

21 Nov 2024, 08:54

Type Values Removed Values Added
References () https://gist.github.com/keltecc/49da037072276f21b005a8337c15db26 - () https://gist.github.com/keltecc/49da037072276f21b005a8337c15db26 -
References () https://github.com/AntonKueltz/fastecdsa/blob/v2.3.1/src/curveMath.c%23L210 - () https://github.com/AntonKueltz/fastecdsa/blob/v2.3.1/src/curveMath.c%23L210 -
References () https://github.com/AntonKueltz/fastecdsa/commit/57fc5689c95d649dab7ef60cc99ac64589f01e36 - () https://github.com/AntonKueltz/fastecdsa/commit/57fc5689c95d649dab7ef60cc99ac64589f01e36 -
References () https://security.snyk.io/vuln/SNYK-PYTHON-FASTECDSA-6262045 - () https://security.snyk.io/vuln/SNYK-PYTHON-FASTECDSA-6262045 -
Summary
  • (es) Las versiones del paquete fastecdsa anteriores a la 2.3.2 son vulnerables al uso de variables no inicializadas en la pila, a través de la función curvemath_mul en src/curveMath.c, debido a que se usan e interpretan como un tipo definido por el usuario. Dependiendo del valor real de la variable, podría ser free() arbitrario, realloc() arbitrario, desreferencia de puntero nulo y otros. Dado que el atacante puede controlar la pila, la vulnerabilidad podría usarse para corromper la estructura del asignador, lo que llevaría a una posible explotación del montón. El atacante podría provocar una denegación de servicio aprovechando esta vulnerabilidad.

24 Feb 2024, 05:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-02-24 05:15

Updated : 2025-02-12 18:49

NVD link : CVE-2024-21502

Mitre link : CVE-2024-21502

CVE.ORG link : CVE-2024-21502

JSON object : View

Products Affected

antonkueltz

  • fastecdsa
CWE
CWE-457

Use of Uninitialized Variable

CWE-908

Use of Uninitialized Resource