製品・ソフトウェアに関する情報
特定の Samsung Android デバイスのソフトウェア Android OS の system_server プロセスにおけるサービス運用妨害 (DoS) の脆弱性
Title 特定の Samsung Android デバイスのソフトウェア Android OS の system_server プロセスにおけるサービス運用妨害 (DoS) の脆弱性
Summary

特定の Samsung Android デバイスのソフトウェア Android OS の system_server プロセスには、サービス運用妨害 (継続的クラッシュ) 状態にされる脆弱性が存在します。 ベンダは、本脆弱性を SVE-2016-6917 として公開しています。

Possible impacts パーミッションのない (zero-permission) Android アプリケーションをインストールされることで、サービス運用妨害 (継続的クラッシュ) 状態にされる可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。

Publication Date Jan. 9, 2017, midnight
Registration Date Jan. 17, 2017, 6:02 p.m.
Last Update Jan. 17, 2017, 6:02 p.m.
CVSS3.0 : 警告
Score 5.5
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS2.0 : 危険
Score 7.1
Vector AV:N/AC:M/Au:N/C:N/I:N/A:C
Affected System
サムスン
Samsung Mobile 
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
その他
Change Log
No Changed Details Date of change
0 [2017年01月17日]
  掲載
Feb. 17, 2018, 10:37 a.m.

NVD Vulnerability Information
CVE-2017-5217
Summary

Installing a zero-permission Android application on certain Samsung Android devices with KK(4.4), L(5.0/5.1), and M(6.0) software can continually crash the system_server process in the Android OS. The zero-permission app will create an active install session for a separate app that it has embedded within it. The active install session of the embedded app is performed using the android.content.pm.PackageInstaller class and its nested classes in the Android API. The active install session will write the embedded APK file to the /data/app directory, but the app will not be installed since third-party applications cannot programmatically install apps. Samsung has modified AOSP in order to accelerate the parsing of APKs by introducing the com.android.server.pm.PackagePrefetcher class and its nested classes. These classes will parse the APKs present in the /data/app directory and other directories, even if the app is not actually installed. The embedded APK that was written to the /data/app directory via the active install session has a very large but valid AndroidManifest.xml file. Specifically, the AndroidManifest.xml file contains a very large string value for the name of a permission-tree that it declares. When system_server tries to parse the APK file of the embedded app from the active install session, it will crash due to an uncaught error (i.e., java.lang.OutOfMemoryError) or an uncaught exception (i.e., std::bad_alloc) because of memory constraints. The Samsung Android device will encounter a soft reboot due to a system_server crash, and this action will keep repeating since parsing the APKs in the /data/app directory as performed by the system_server process is part of the normal boot process. The Samsung ID is SVE-2016-6917.

Publication Date Jan. 9, 2017, 5:59 p.m.
Registration Date Jan. 26, 2021, 1:25 p.m.
Last Update Nov. 21, 2024, 12:27 p.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:o:samsung:samsung_mobile:5.1:*:*:*:*:*:*:*
cpe:2.3:o:samsung:samsung_mobile:6.0:*:*:*:*:*:*:*
cpe:2.3:o:samsung:samsung_mobile:5.0:*:*:*:*:*:*:*
cpe:2.3:o:samsung:samsung_mobile:4.4:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List