CVE-2024-2961

La función iconv() en las versiones 2.39 y anteriores de la librería GNU C puede desbordar el búfer de salida que se le pasa hasta en 4 bytes al convertir cadenas al juego de caracteres ISO-2022-CN-EXT, lo que puede usarse para bloquear una aplicación. o sobrescribir una variable vecina.

An out-of-bounds write flaw was found in the ISO-2022-CN-EXT plugin for glibc's iconv library. When converting from UCS4 charset, adding certain escape charterers is required to indicate where the charset was changed to the library. During this process, iconv improperly checks the boundaries of internal buffers, leading to a buffer overflow, which allows writing up to 3 bytes outside the desired memory location. This issue may allow an attacker to craft a malicious characters sequence that will trigger the out-of-bounds write and perform remote code execution, presenting a high impact to the Integrity, Confidentiality, and Availability triad.