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CVE-2021-27378

Date: February 17, 2021

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. Converted from WS-2021-0023, on 2022-11-07.

Language: RUST

Severity Score

Related Resources (8)

https://github.com/rust-random/rand/compare/0.6.0...rand_core-0.6.2#diff-f41b3dfa5ce28f3bee390d327c50621e141cf3569921f8e9ca15ccfcf25263a9R19
https://crates.io/crates/rand_core
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
https://github.com/rust-random/rand/compare/0.6.0...rand_core-0.6.2#diff-f41b3dfa5ce28f3bee390d327c50621e141cf3569921f8e9ca15ccfcf25263a9R28
https://www.mend.io/vulnerability-database/CVE-2021-27378

Severity Score

Weakness Type (CWE)

Use of Insufficiently Random Values

CWE-330

Incorrect Calculation of Buffer Size

CWE-131

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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