CVE-2019-10655 – Grandstream GXV31XX settimezone Unauthenticated Command Execution

https://notcve.org/view.php?id=CVE-2019-10655

Grandstream GAC2500 1.0.3.35, GXP2200 1.0.3.27, GVC3202 1.0.3.51, GXV3275 before 1.0.3.219 Beta, and GXV3240 before 1.0.3.219 Beta devices allow unauthenticated remote code execution via shell metacharacters in a /manager?action=getlogcat priority field, in conjunction with a buffer overflow (via the phonecookie cookie) to overwrite a data structure and consequently bypass authentication. This can be exploited remotely or via CSRF because the cookie can be placed in an Accept HTTP header in an XMLHttpRequest call to lighttpd. Los dispositivos de Grandstream GAC2500 1.0.3.35, GXP2200 1.0.3.27, GVC3202 1.0.3.51, GXV3275 anteriores a la versión 1.0.3.219 Beta y GXV3240 anteriores a la 1.0.3.219 Beta permiten la ejecución remota de código mediante metacaracteres shell en un campo "priority" en /manager?action=getlogcat, en conjunto con un desbordamiento de búfer (mediante la cookie "phonecookie") para sobrescribir una estructura de datos y, por consiguiente, omitir la autenticación. • http://packetstormsecurity.com/files/165643/Grandstream-GXV3175-Unauthenticated-Command-Execution.html http://packetstormsecurity.com/files/165931/Grandstream-GXV31XX-settimezone-Unauthenticated-Command-Execution.html https://github.com/scarvell/grandstream_exploits https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=23920&dl=1 • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-352: Cross-Site Request Forgery (CSRF) •