HistoryEdit

RUSTSEC-2018-0022

Use of uninitialized memory in temporary

Issued
Package
temporary (crates.io)
Type
Vulnerability
Categories
Keywords
#uninitialized-memory
Details
https://github.com/stainless-steel/temporary/issues/2
Patched
  • >=0.6.4
Unaffected
  • <0.3.0

Description

Uninit memory is used as a RNG seed in temporary

The following function is used as a way to get entropy from the system, which does operations on and exposes uninit memory, which is UB.

fn random_seed(_: &Path, _: &str) -> [u64; 2] {
    use std::mem::uninitialized as rand;
    unsafe { [rand::<u64>() ^ 0x12345678, rand::<u64>() ^ 0x87654321] }
}

This has been resolved in the 0.6.4 release.

The crate is not intended to be used outside of a testing environment.

For a general purpose crate to create temporary directories, tempfile is an alternative for this crate.