Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory. This affects all supported versions of HHVM (4.0.3, 3.30.4, and 3.27.7 and below).
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.
The product reads data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75 | third party advisory |
| https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.html | vendor advisory |