CVE-2024-8796

Under the default configuration, Devise-Two-Factor versions >= 2.2.0 & < 6.0.0 generate TOTP shared secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret shorter than the minimum to generate a multi-factor authentication code could make it easier for an attacker to guess the shared secret and generate valid TOTP codes.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/devise-two-factor/devise-two-factor/security/advisories/GHSA-qjxf-mc72-wjr2

Configurations

No configuration.

History

17 Sep 2024, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-09-17 18:15

Updated : 2024-09-17 18:15

NVD link : CVE-2024-8796

Mitre link : CVE-2024-8796

CVE.ORG link : CVE-2024-8796

JSON object : View

Products Affected

No product.

CWE

CWE-331

Insufficient Entropy

{"id": "CVE-2024-8796", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "disclosure@synopsys.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.6}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@synopsys.com", "cvssData": {"safety": "NOT_DEFINED", "version": "4.0", "recovery": "NOT_DEFINED", "baseScore": 6.0, "automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "modifiedAttackVector": "NOT_DEFINED", "integrityRequirements": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "availabilityRequirements": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subsequentSystemIntegrity": "NONE", "vulnerableSystemIntegrity": "NONE", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "confidentialityRequirements": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "subsequentSystemAvailability": "NONE", "vulnerableSystemAvailability": "NONE", "subsequentSystemConfidentiality": "NONE", "vulnerableSystemConfidentiality": "HIGH", "modifiedSubsequentSystemIntegrity": "NOT_DEFINED", "modifiedVulnerableSystemIntegrity": "NOT_DEFINED", "modifiedSubsequentSystemAvailability": "NOT_DEFINED", "modifiedVulnerableSystemAvailability": "NOT_DEFINED", "modifiedSubsequentSystemConfidentiality": "NOT_DEFINED", "modifiedVulnerableSystemConfidentiality": "NOT_DEFINED"}}]}, "published": "2024-09-17T18:15:05.443", "references": [{"url": "https://github.com/devise-two-factor/devise-two-factor/security/advisories/GHSA-qjxf-mc72-wjr2", "source": "disclosure@synopsys.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "disclosure@synopsys.com", "description": [{"lang": "en", "value": "CWE-331"}]}], "descriptions": [{"lang": "en", "value": "Under the default configuration, Devise-Two-Factor versions >= 2.2.0 & < 6.0.0 generate TOTP shared secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret shorter than the minimum to generate a multi-factor authentication code could make it easier for an attacker to guess the shared secret and generate valid TOTP codes."}], "lastModified": "2024-09-17T18:15:05.443", "sourceIdentifier": "disclosure@synopsys.com"}