CVE-2021-20038 – SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability

https://notcve.org/view.php?id=CVE-2021-20038

A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions. Una vulnerabilidad de desbordamiento de búfer en la región Stack de la memoria en las variables de entorno del módulo mod_cgi del servidor httpd de SMA100 permite a un atacante remoto no autenticado ejecutar potencialmente código como usuario "nobody" en el dispositivo. Esta vulnerabilidad afecta a los dispositivos SMA 200, 210, 400, 410 y 500v con firmware versiones 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv y versiones anteriores SonicWall SMA 100 devies are vulnerable to an unauthenticated stack-based buffer overflow vulnerability where exploitation can result in code execution. • https://github.com/vesperp/CVE-2021-20038-SonicWall-RCE https://github.com/jbaines-r7/badblood https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026 https://www.rapid7.com/blog/post/2022/01/11/cve-2021-20038-42-sonicwall-sma-100-multiple-vulnerabilities-fixed-2 • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •