CVE-2021-27378

Published: Feb 18, 2021Modified: Jun 17, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

An issue was discovered in the rand_core crate before 0.6.2 for Rust. Because read_u32_into and read_u64_into mishandle certain buffer-length checks, a random number generator may be seeded with too little data.

Affected (1)

Products: Rand Core Project: Rand Core

Rand Core Project

1 product

Rand Core

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Rand Core Project Rand Core	From 0.6.0 to 0.6.2

Related CWEs

CWE-131

Incorrect Calculation of Buffer Size

The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.

References (2)

https://rustsec.org/advisories/RUSTSEC-2021-0023.html

Source: cve@mitre.org

Third Party Advisory

https://rustsec.org/advisories/RUSTSEC-2021-0023.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

Timeline

No history available yet.