CVE-2010-2752

Un desbordamiento de enteros en una clase de matriz en Firefox versiones 3.5.x anteriores a 3.5.11 y versiones 3.6.x anteriores a 3.6.7, Thunderbird versiones 3.0.x anteriores a 3.0.6 y versiones 3.1.x anteriores a 3.1.1, y SeaMonkey anterior a versión 2.0.6, de Mozilla, permite a los atacantes remotos ejecutar código arbitrario mediante la colocación de muchos valores de Cascading Style Sheets (CSS) en una matriz, relacionada con referencias a recursos de fuente externa y una inconsistencia entre enteros de 16 bits y 32 bits.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within handling of references to external font resources. A value is used as a 16 bit integer in an array allocation and later as 32 bit when iterating over and then populating these fields. By creating enough references, a remote attacker can exploit this vulnerability to execute arbitrary code under the context of the browser.