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The Vivo V7 Android device with a build fingerprint of vivo/1718/1718:7.1.2/N2G47H/compil11021857:user/release-keys contains a platform app with a package name of com.vivo.smartshot (versionCode=1, versionName=3.0.0). This app contains an exported service named com.vivo.smartshot.ui.service.ScreenRecordService that will record the screen for 60 minutes and write the mp4 file to a location of the user's choosing. Normally, a recording notification will be visible to the user, but we discovered an approach to make it mostly transparent to the user by quickly removing a notification and floating icon. The user can see a floating icon and notification appear and disappear quickly due to quickly stopping and restarting the service with different parameters that do not interfere with the ongoing screen recording. The screen recording lasts for 60 minutes and can be written directly to the attacking app's private directory.

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Vivo V7 权限许可和访问控制问题漏洞

Vivo V7是中国维沃移动通信（Vivo）公司的一款基于Android平台的智能手机。 Vivo V7 （build fingerprint为vivo/1718/1718:7.1.2/N2G47H/compil11021857:user/release-keys）中的com.vivo.smartshot包(versionCode=1, versionName=3.0.0)存在安全漏洞。攻击者可利用该漏洞获取信息或造成系统崩溃。

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