CVE-2021-42716
Gentoo Linux Security Advisory 202409-15
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
2Exploited in Wild
-Decision
Descriptions
An issue was discovered in stb stb_image.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stb_image, or read up to 1024 bytes of non-consecutive heap data without control over the read location.
Se ha detectado un problema en stb stb_image.h versión 2.27. El cargador de PNM interpretaba incorrectamente los archivos PGM de 16 bits como de 8 bits cuando los convertía a RGBA, conllevando a un desbordamiento del búfer cuando se reinterpreta posteriormente el resultado como un búfer de 16 bits. Un atacante podría potencialmente bloquear un servicio usando stb_image, o leer hasta 1024 bytes de datos de la pila no consecutivos sin control sobre la ubicación de lectura
Multiple vulnerabilities have been discovered in stb, the worst of which lead to a denial of service. Versions greater than or equal to 20240201 are affected.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-10-19 CVE Reserved
- 2021-10-21 CVE Published
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
References (12)
| URL | Tag | Source |
|---|---|---|
| https://github.com/nothings/stb/pull/1223 | Third Party Advisory |
| URL | Date | SRC |
|---|---|---|
| https://github.com/nothings/stb/issues/1166 | 2024-08-04 | |
| https://github.com/nothings/stb/issues/1225 | 2024-08-04 |
| URL | Date | SRC |
|---|
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" | 2.27 Search vendor "Nothings" for product "Stb Image.h" and version "2.27" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 35 Search vendor "Fedoraproject" for product "Fedora" and version "35" | - |
Affected
| ||||||