CVE-2020-36438: 
Rust vulnerability analysis and mitigation

A vulnerability was discovered in the tiny_future crate before version 0.4.0 for Rust, identified as CVE-2020-36438. The issue involves the Future type lacking proper bounds on its Send and Sync traits, which was disclosed on December 8, 2020. This vulnerability affects the tiny_future crate, a lightweight implementation of Futures in Rust (RustSec Advisory).

The vulnerability stems from the Future type implementation lacking necessary bounds on its Send and Sync traits. This implementation flaw allows non-thread safe types such as Cell to be used in Futures, potentially causing data races in concurrent programs. The vulnerability has been assigned a CVSS v3.1 score of 8.1 (High), with the vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H (RustSec Advisory).

The vulnerability can lead to memory corruption and thread-safety issues in concurrent programs. When exploited, it could result in data races due to the improper handling of non-thread safe types in Futures (RustSec Advisory).

The vulnerability was fixed in version 0.4.0 of the tiny_future crate. The fix was implemented in commit c791919 by adding proper trait bounds to Future's Send and Sync traits. Users are advised to upgrade to version 0.4.0 or later (RustSec Advisory).