CVE-2021-40834

A user interface overlay vulnerability was discovered in F-secure SAFE Browser for Android. When user click on a specially crafted seemingly legitimate URL SAFE browser goes into full screen and hides the user interface. A remote attacker can leverage this to perform spoofing attack.

CVSS v3 4.3 MEDIUM
CVSS v2.0 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame	Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40834	Vendor Advisory
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame	Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40834	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:f-secure:safe:*:*:*:*:*:android:*:*

History

No history.

Information

Published : 2021-12-10 14:15

Updated : 2024-11-21 06:24

NVD link : CVE-2021-40834

Mitre link : CVE-2021-40834

CVE.ORG link : CVE-2021-40834

JSON object : View

Products Affected

f-secure

safe

CWE

CWE-1021

Improper Restriction of Rendered UI Layers or Frames

{"id": "CVE-2021-40834", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Secondary", "source": "cve-notifications-us@f-secure.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 0.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "published": "2021-12-10T14:15:10.093", "references": [{"url": "https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame", "tags": ["Vendor Advisory"], "source": "cve-notifications-us@f-secure.com"}, {"url": "https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40834", "tags": ["Vendor Advisory"], "source": "cve-notifications-us@f-secure.com"}, {"url": "https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40834", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-1021"}]}], "descriptions": [{"lang": "en", "value": "A user interface overlay vulnerability was discovered in F-secure SAFE Browser for Android. When user click on a specially crafted seemingly legitimate URL SAFE browser goes into full screen and hides the user interface. A remote attacker can leverage this to perform spoofing attack."}, {"lang": "es", "value": "Se ha detectado una vulnerabilidad de superposici\u00f3n de la interfaz de usuario en F-secure SAFE Browser para Android. Cuando el usuario hace clic en una URL aparentemente leg\u00edtima especialmente dise\u00f1ada, el navegador SAFE pasa a pantalla completa y oculta la interfaz de usuario. Un atacante remoto puede aprovechar esto para llevar a cabo un ataque de suplantaci\u00f3n de identidad"}], "lastModified": "2024-11-21T06:24:53.117", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:f-secure:safe:*:*:*:*:*:android:*:*", "vulnerable": true, "matchCriteriaId": "0ECDAF3F-FF7E-46E1-AB62-8673A1256EA9", "versionEndIncluding": "17.9"}], "operator": "OR"}]}], "sourceIdentifier": "cve-notifications-us@f-secure.com"}