// For flags

CVE-2023-45664

Double-free in stbi__load_gif_main_outofmem in stb_image

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

stb_image is a single file MIT licensed library for processing images. A crafted image file can trigger `stbi__load_gif_main_outofmem` attempt to double-free the out variable. This happens in `stbi__load_gif_main` because when the `layers * stride` value is zero the behavior is implementation defined, but common that realloc frees the old memory and returns null pointer. Since it attempts to double-free the memory a few lines below the first “free”, the issue can be potentially exploited only in a multi-threaded environment. In the worst case this may lead to code execution.

stb_image es una librería con licencia MIT de un solo archivo para procesar imágenes. Un archivo de imagen manipulado puede provocar que `stbi__load_gif_main_outofmem` intente liberar dos veces la variable out. Esto sucede en `stbi__load_gif_main` porque cuando el valor de `layers * stride` es cero, el comportamiento está definido por la implementación, pero es común que la realloc libere la memoria antigua y devuelva un puntero nulo. Dado que intenta liberar dos veces la memoria unas pocas líneas debajo de la primera "free", el problema sólo puede explotarse en un entorno de subprocesos múltiples. En el peor de los casos, esto puede provocar la ejecución del código.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
Poc
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-10-10 CVE Reserved
  • 2023-10-20 CVE Published
  • 2024-09-12 CVE Updated
  • 2024-10-26 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-415: Double Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nothings
Search vendor "Nothings"
 Stb Image.h
Search vendor "Nothings" for product "Stb Image.h"
 2.28
Search vendor "Nothings" for product "Stb Image.h" and version "2.28"
-
Affected