// For flags

CVE-2021-21843

 

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input can cause an integer overflow due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. After validating the number of ranges, at [41] the library will multiply the count by the size of the GF_SubsegmentRangeInfo structure. On a 32-bit platform, this multiplication can result in an integer overflow causing the space of the array being allocated to be less than expected. An attacker can convince a user to open a video to trigger this vulnerability.

Se presentan múltiples vulnerabilidades de desbordamiento de enteros explotables dentro de la funcionalidad MPEG-4 decoding de GPAC Project on Advanced Content library versión v1.0.1. Una entrada MPEG-4 especialmente diseñada puede causar un desbordamiento de enteros debido a la aritmética no comprobada, resultando en un desbordamiento de búfer en la región heap de la memoria que causa una corrupción de memoria. Después de comprender el número de rangos, en [41] la biblioteca multiplicará el recuento por el tamaño de la estructura GF_SubsegmentRangeInfo. En una plataforma de 32 bits, esta multiplicación puede resultar en un desbordamiento de enteros, causando que el espacio de la matriz que se asigna sea menor de lo esperado. Un atacante puede convencer a un usuario de que abra un vídeo para desencadenar esta vulnerabilidad.

*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
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-04 CVE Reserved
  • 2021-08-18 CVE Published
  • 2024-05-03 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-680: Integer Overflow to Buffer Overflow
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Gpac
Search vendor "Gpac"
 Gpac
Search vendor "Gpac" for product "Gpac"
 1.0.1
Search vendor "Gpac" for product "Gpac" and version "1.0.1"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 11.0
Search vendor "Debian" for product "Debian Linux" and version "11.0"
-
Affected