Espruino before 1.99 allows attackers to cause a denial of service (application crash) with a user crafted input file via a Buffer Overflow during syntax parsing because a check for '\0' is made for the wrong array element in jsvar.c.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://github.com/espruino/Espruino/issues/1435 | issue tracking vendor advisory |
| https://github.com/espruino/Espruino/commit/ce1924193862d58cb43d3d4d9dada710a8361b89 | patch vendor advisory |