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 little data.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://rustsec.org/advisories/RUSTSEC-2021-0023.html	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:rand_core_project:rand_core:*:*:*:*:*:rust:*:*

History

12 Jul 2022, 17:42

Type	Values Removed	Values Added
CWE	~~CWE-330~~	CWE-131

Information

Published : 2021-02-18 04:15

Updated : 2024-02-04 21:23

NVD link : CVE-2021-27378

Mitre link : CVE-2021-27378

CVE.ORG link : CVE-2021-27378

JSON object : View

Products Affected

rand_core_project

rand_core

CWE

CWE-131

Incorrect Calculation of Buffer Size

{"id": "CVE-2021-27378", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-02-18T04:15:11.823", "references": [{"url": "https://rustsec.org/advisories/RUSTSEC-2021-0023.html", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-131"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se detect\u00f3 un problema en la crate rand_core versiones anteriores a 0.6.2 para Rust. Debido a que las funciones read_u32_into y read_u64_into manejan inapropiadamente determinadas comprobaciones de la longitud del b\u00fafer, un generador de n\u00fameros aleatorios puede ser sembrado con muy pocos datos"}], "lastModified": "2022-07-12T17:42:04.277", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:rand_core_project:rand_core:*:*:*:*:*:rust:*:*", "vulnerable": true, "matchCriteriaId": "76C21C9D-DDFF-4143-B2FB-8C5869812D61", "versionEndExcluding": "0.6.2", "versionStartIncluding": "0.6.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}