RUSTSEC-2020-0103

impl Random on arrays can lead to dropping uninitialized memory

Reported

December 31, 2020

Issued

January 20, 2021 (last modified: June 13, 2023)

Package

autorand (crates.io)

Type

Vulnerability

Categories

memory-corruption

Aliases

References

https://github.com/mersinvald/autorand-rs/issues/5

CVSS Score

7.8 HIGH

CVSS Details

Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Patched

>=0.2.3

Description

Affected versions of this crate had a panic safety issue to drop partially uninitialized array of T upon panic in a user provided function T::random(). Dropping uninitialized T can potentially cause memory corruption or undefined behavior.

The flaw was corrected in commit 565d508 by using MaybeUninit<T> to avoid possible dropping of uninitialized memory upon panic.

Advisory available under CC0-1.0 license.