CVE-2018-19490

Se ha descubierto un problema en Gnuplot 5.2.5. Este problema permite a un atacante realizar un desbordamiento de búfer basado en memoria dinámica (heap) con una cantidad arbitraria de datos en df_generate_ascii_array_entry. Para explotar esta vulnerabilidad, un atacante deberá pasar una cadena demasiada larga como el límite correcto del argumento range que se pasa a la función plot.

Tim Blazytko, Cornelius Aschermann, Sergej Schumilo and Nils Bars discovered that Gnuplot did not properly validate string sizes in the df_generate_ascii_array_entry function. An attacker could possibly use this issue to cause a heap buffer overflow, resulting in a denial of service attack or arbitrary code execution. Tim Blazytko, Cornelius Aschermann, Sergej Schumilo and Nils Bars discovered that Gnuplot did not properly validate string sizes in the PS_options function when the Gnuplot postscript terminal is used as a backend. An attacker could possibly use this issue to cause a buffer overflow, resulting in a denial of service attack or arbitrary code execution. Various other issues were also addressed.