CVE-2023-2512 (workerd)

Prior to version v1.20230419.0, the FormData API implementation was subject to an integer overflow. If a FormData instance contained more than 2^31 elements, the forEach() method could end up reading from the wrong location in memory while iterating over elements. This would most likely lead to a segmentation fault, but could theoretically allow arbitrary undefined behavior.


In order for the bug to be exploitable, the process would need to be able to allocate 160GB of RAM. Due to this, the …

api cve end foreach implementation instance integer location memory order overflow segmentation version