1. Home
  2. CVE Database
  3. CVE-2021-27378
CRITICAL · 9.8

CVE-2021-27378

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 l...

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
Rand Core ProjectRand Core>= 0.6.0, < 0.6.2

Related Weaknesses (CWE)

CWE-131

References

FAQ

What is CVE-2021-27378?

CVE-2021-27378 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 l...

How severe is CVE-2021-27378?

CVE-2021-27378 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-27378?

Check the references section above for vendor advisories and patch information. Affected products include: Rand Core Project Rand Core.