NVD Vulnerability Detail

CVE-2020-12270

Summary	React Native Bluetooth Scan in Bluezone 1.0.0 uses six-character alphanumeric IDs, which might make it easier for remote attackers to interfere with COVID-19 contact tracing by using many IDs. NOTE: the vendor disputes the relevance of this report because the recipient of an F1 alert will know it was a false alert if contact-history comparison fails (i.e., an F0 is not actually part of the contact history obtained from the device of this recipient, or this recipient is not actually part of the contact history obtained from the device of an F0)
Publication Date	April 27, 2020, 1:15 p.m.
Registration Date	Jan. 26, 2021, 11:51 a.m.
Last Update	Nov. 21, 2024, 1:59 p.m.

CVSS3.1 : MEDIUM
スコア	6.5
Vector	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
攻撃元区分(AV)	隣接
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	不要
利用者の関与(UI)	不要
影響の想定範囲(S)	変更なし
機密性への影響(C)	高
完全性への影響(I)	なし
可用性への影響(A)	なし

CVSS2.0 : LOW
Score	3.3
Vector	AV:A/AC:L/Au:N/C:P/I:N/A:N
攻撃元区分(AV)	隣接
攻撃条件の複雑さ(AC)	低
攻撃前の認証要否(Au)	不要
機密性への影響(C)	低
完全性への影響(I)	なし
可用性への影響(A)	なし
Get all privileges.	いいえ
Get user privileges	いいえ
Get other privileges	いいえ
User operation required	いいえ

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:a:bluezone:bluezone:1.0.0:::::::*

Related information, measures and tools

No	URL	タグ
1	https://bluezone.ai/CVE
2	https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/CHANGELOG.md	Release Notes Third Party Advisory
3	https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/package.json#L27	Third Party Advisory
4	https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/AndroidManifest.xml#L11-L12	Third Party Advisory
5	https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/java/com/scan/BluezonerIdGenerator.java#L18-L28	Third Party Advisory
6	https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/java/com/scan/TraceCovidModule.java#L98	Third Party Advisory
7	https://vnhacker.blogspot.com/2020/04/vietnams-contact-tracing-app_26.html	Exploit Third Party Advisory
8	https://bluezone.ai/CVE
9	https://vnhacker.blogspot.com/2020/04/vietnams-contact-tracing-app_26.html	Exploit Third Party Advisory
10	https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/java/com/scan/TraceCovidModule.java#L98	Third Party Advisory
11	https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/java/com/scan/BluezonerIdGenerator.java#L18-L28	Third Party Advisory
12	https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/AndroidManifest.xml#L11-L12	Third Party Advisory
13	https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/package.json#L27	Third Party Advisory
14	https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/CHANGELOG.md	Release Notes Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-330	不十分なランダム値の使用	https://cwe.mitre.org/data/definitions/330.html

JVN Vulnerability Information

Bluezone における不十分なランダム値の使用に関する脆弱性

Title	Bluezone における不十分なランダム値の使用に関する脆弱性
Summary	未確定本件は、脆弱性として確定していません。 Bluezone には、不十分なランダム値の使用に関する脆弱性が存在します。ベンダは、本脆弱性に対して異議を唱えています。詳細については、以下の NVD の Current Description を確認してください。 https://nvd.nist.gov/vuln/detail/CVE-2020-12270
Possible impacts	情報を取得される可能性があります。
Solution	ベンダ情報および参考情報を参照して適切な対策を実施してください。
Publication Date	April 26, 2020, midnight
Registration Date	June 2, 2020, 6 p.m.
Last Update	June 2, 2020, 6 p.m.

Affected System

Bluezone

Bluezone 1.0.0

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2020-12270	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12270
National Vulnerability Database (NVD)
2	CVE-2020-12270	https://nvd.nist.gov/vuln/detail/CVE-2020-12270

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-330	https://cwe.mitre.org/data/definitions/330.html

ベンダー情報

No	Name	URL
GitHub
1	bluezone-app/package.json	https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/package.json#L27
2	Changelog	https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/CHANGELOG.md

Change Log

No	Changed Details	Date of change
1	[2020年06月02日] 掲載	June 2, 2020, 6 p.m.