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ID

VAR-202009-0773


CVE

CVE-2020-24721


TITLE

Android  For and  iOS  for  GAEN  Protocol vulnerabilities

Trust: 0.8

sources: JVNDB: JVNDB-2020-012490

DESCRIPTION

An issue was discovered in the GAEN (aka Google/Apple Exposure Notifications) protocol through 2020-09-29, as used in COVID-19 applications on Android and iOS. It allows a user to be put in a position where he or she can be coerced into proving or disproving an exposure notification, because of the persistent state of a private framework. Apple iOS is an operating system developed for mobile devices by Google and the Open Handheld Alliance (OHA). Android is a Linux-based open source operating system developed by Google and the Open Handheld Alliance (OHA)

Trust: 1.8

sources: NVD: CVE-2020-24721 // JVNDB: JVNDB-2020-012490 // VULHUB: VHN-178628 // VULMON: CVE-2020-24721

AFFECTED PRODUCTS

vendor:googlemodel:exposure notificationsscope:lteversion:1.5

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vendor:applemodel:exposure notificationsscope:lteversion:1.5

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vendor:アップルmodel:exposure notifications api for iosscope:lteversion:2020-09-29 until

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vendor:googlemodel:exposure notifications api for androidscope: - version: -

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sources: JVNDB: JVNDB-2020-012490 // NVD: CVE-2020-24721

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2020-24721
value: MEDIUM

Trust: 1.0

NVD: CVE-2020-24721
value: MEDIUM

Trust: 0.8

CNNVD: CNNVD-202009-1679
value: MEDIUM

Trust: 0.6

VULHUB: VHN-178628
value: LOW

Trust: 0.1

VULMON: CVE-2020-24721
value: LOW

Trust: 0.1

nvd@nist.gov: CVE-2020-24721
severity: LOW
baseScore: 3.3
vectorString: AV:L/AC:M/AU:N/C:P/I:P/A:N
accessVector: LOCAL
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: NONE
exploitabilityScore: 3.4
impactScore: 4.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.9

VULHUB: VHN-178628
severity: LOW
baseScore: 3.3
vectorString: AV:L/AC:M/AU:N/C:P/I:P/A:N
accessVector: LOCAL
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: NONE
exploitabilityScore: 3.4
impactScore: 4.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

nvd@nist.gov: CVE-2020-24721
baseSeverity: MEDIUM
baseScore: 5.7
vectorString: CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
attackVector: PHYSICAL
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: NONE
exploitabilityScore: 0.5
impactScore: 5.2
version: 3.1

Trust: 1.0

NVD: CVE-2020-24721
baseSeverity: MEDIUM
baseScore: 5.7
vectorString: CVSS:3.0/AV:P/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
attackVector: PHYSICAL
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: NONE
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: VULHUB: VHN-178628 // VULMON: CVE-2020-24721 // JVNDB: JVNDB-2020-012490 // CNNVD: CNNVD-202009-1679 // NVD: CVE-2020-24721

PROBLEMTYPE DATA

problemtype:NVD-CWE-noinfo

Trust: 1.0

problemtype:Lack of information (CWE-noinfo) [NVD Evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2020-012490 // NVD: CVE-2020-24721

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202009-1679

PATCH

title:An update on Exposure Notifications Apple Apple Developerurl:https://blog.google/inside-google/company-announcements/update-exposure-notifications

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title:Google Apple GAEN Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=130412

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sources: JVNDB: JVNDB-2020-012490 // CNNVD: CNNVD-202009-1679

EXTERNAL IDS

db:NVDid:CVE-2020-24721

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db:PACKETSTORMid:159419

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db:JVNDBid:JVNDB-2020-012490

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db:CNNVDid:CNNVD-202009-1679

Trust: 0.6

db:VULHUBid:VHN-178628

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db:VULMONid:CVE-2020-24721

Trust: 0.1

sources: VULHUB: VHN-178628 // VULMON: CVE-2020-24721 // JVNDB: JVNDB-2020-012490 // CNNVD: CNNVD-202009-1679 // NVD: CVE-2020-24721

REFERENCES

url:https://github.com/minvws/nl-covid19-notification-app-coordination/blob/master/cves/cve-2020-24721.txt

Trust: 2.6

url:http://packetstormsecurity.com/files/159419/corona-exposure-notifications-api-data-leakage.html

Trust: 2.5

url:https://seclists.org/fulldisclosure/2020/sep/53

Trust: 1.8

url:https://blog.google/inside-google/company-announcements/update-exposure-notifications

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url:https://nvd.nist.gov/vuln/detail/cve-2020-24721

Trust: 1.4

url:https://cwe.mitre.org/data/definitions/.html

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url:https://nvd.nist.gov

Trust: 0.1

sources: VULHUB: VHN-178628 // VULMON: CVE-2020-24721 // JVNDB: JVNDB-2020-012490 // CNNVD: CNNVD-202009-1679 // NVD: CVE-2020-24721

CREDITS

Dirk-Willem van Gulik

Trust: 0.6

sources: CNNVD: CNNVD-202009-1679

SOURCES

db:VULHUBid:VHN-178628
db:VULMONid:CVE-2020-24721
db:JVNDBid:JVNDB-2020-012490
db:CNNVDid:CNNVD-202009-1679
db:NVDid:CVE-2020-24721

LAST UPDATE DATE

2024-11-23T23:01:18.161000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-178628date:2020-10-22T00:00:00
db:VULMONid:CVE-2020-24721date:2020-10-22T00:00:00
db:JVNDBid:JVNDB-2020-012490date:2021-05-11T04:56:00
db:CNNVDid:CNNVD-202009-1679date:2020-10-23T00:00:00
db:NVDid:CVE-2020-24721date:2024-11-21T05:15:58.070

SOURCES RELEASE DATE

db:VULHUBid:VHN-178628date:2020-09-30T00:00:00
db:VULMONid:CVE-2020-24721date:2020-09-30T00:00:00
db:JVNDBid:JVNDB-2020-012490date:2021-05-11T00:00:00
db:CNNVDid:CNNVD-202009-1679date:2020-09-30T00:00:00
db:NVDid:CVE-2020-24721date:2020-09-30T18:15:25.193