rust-random/rand · Security
Incorrect check on buffer length in rand_core
- GHSA ID
- GHSA-w7j2-35mf-95p7
- CVE ID
- CVE-2021-27378
- Severity
- critical
- Published
- Updated
- CVSS
- 9.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS v3
- 9.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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. 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.
CWEs
- CWE-330 · Use of Insufficiently Random Values
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 ↗