CVE-2009-0040

The PNG reference library (aka libpng) before 1.0.43, and 1.2.x before 1.2.35, as used in pngcrush and other applications, allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file that triggers a free of an uninitialized pointer in (1) the png_read_png function, (2) pCAL chunk handling, or (3) setup of 16-bit gamma tables.

The PNG reference library (aka libpng) before 1.0.43, and 1.2.x before 1.2.35, as used in pngcrush and other applications, allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file that triggers a free of an uninitialized pointer in (1) the png_read_png function, (2) pCAL chunk handling, or (3) setup of 16-bit gamma tables.

La libreria de referencia PNG (tambien conocida como libpng) anterior a v1.0.43, y v1.2.x anteriores a 1.2.35, utilizado en pngcrush y otras aplicaciones, lo que permite a atacantes dependientes de contexto producir una denegacion de servicio (caida de aplicacion) o posiblemente ejecutar codigo a traves de de un fichero PNG manipulado que inicia un puntero sin inicializar en (1) la funcion png_read_png, (2) manejador pCAL, o (3) instalacion de tablas de gamma de 16-bit.