ARM mbed product Version 6.3.0 is vulnerable to integer wrap-around in malloc_wrapper function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
Solution:
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 | third party advisory us government resource |
| https://github.com/ARMmbed/mbed-os/pull/14408 | issue tracking patch exploit third party advisory |