Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXc3ajItMzVtZi05NXA3

Incorrect check on buffer length in rand_core

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. The vulnerability was introduced in v0.6.0. The advisory doesn't apply to earlier minor version numbers.

Because read_u32_into and read_u64_into mishandle certain buffer-length checks, a random number generator may be seeded with too little data.

Permalink: https://github.com/advisories/GHSA-w7j2-35mf-95p7
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXc3ajItMzVtZi05NXA3
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 2 years ago
Updated: 11 months ago

CVSS Score: 9.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-w7j2-35mf-95p7, CVE-2021-27378
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-27378
• https://github.com/rust-random/rand/pull/1096
• https://rustsec.org/advisories/RUSTSEC-2021-0023.html
• https://github.com/rust-random/rand/compare/0.6.0...rand_core-0.6.2#diff-f41b3dfa5ce28f3bee390d327c50621e141cf3569921f8e9ca15ccfcf25263a9R19
• https://github.com/rust-random/rand/compare/0.6.0...rand_core-0.6.2#diff-f41b3dfa5ce28f3bee390d327c50621e141cf3569921f8e9ca15ccfcf25263a9R28
• https://github.com/advisories/GHSA-w7j2-35mf-95p7

Repository: https://github.com/rust-random/rand
Blast Radius: 47.7

Affected Packages