shopify-scripts: heap-buffer-overflow (read outside of buffer) in mrb_vm_exec()

Triggered in 3231219 14 April 2017. Compiled with afl-gcc + asan. ./mirb test000 ==10555==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200001c920 at pc 0x52be2c bp 0x7ffe6751ada0 sp 0x7ffe6751ad98 READ of size 16 at 0x60200001c920 thread T0 0 0x52be2b in mrbvmexec...

Dropbox: avrecode: global-buffer-overflow in get_neighbor()

Source: https://github.com/dropbox/avrecode Version: 2de743d Built using the Github instructions with afl-gcc and ASAN. Feeding this malformed .mp4 to recode triggers a global buffer overflow. ./recode roundtrip test003.mp4 mov,mp4,m4a,3gp,3g2,mj2 @ 0x61b00001f180 Protocol name not provided, cann...