中危 elementary switchboard_bluetooth_plug 授权机制不正确
CVE编号
CVE-2021-21367利用情况
暂无补丁情况
官方补丁披露时间
2021-03-13漏洞描述
Switchboard Bluetooth Plug for elementary OS from version 2.3.0 and before version version 2.3.5 has an incorrect authorization vulnerability. When the Bluetooth plug is running (in discoverable mode), Bluetooth service requests and pairing requests are automatically accepted, allowing physically proximate attackers to pair with a device running an affected version of switchboard-plug-bluetooth without the active consent of the user. By default, elementary OS doesn't expose any services via Bluetooth that allow information to be extracted by paired Bluetooth devices. However, if such services (i.e. contact list sharing software) have been installed, it's possible that attackers have been able to extract data from such services without authorization. If no such services have been installed, attackers are only able to pair with a device running an affected version without authorization and then play audio out of the device or possibly present a HID device (keyboard, mouse, etc...) to control the device. As such, users should check the list of trusted/paired devices and remove any that are not 100% confirmed to be genuine. This is fixed in version 2.3.5. To reduce the likelihood of this vulnerability on an unpatched version, only open the Bluetooth plug for short intervals when absolutely necessary and preferably not in crowded public areas. To mitigate the risk entirely with unpatched versions, do not open the Bluetooth plug within switchboard at all, and use a different method for pairing devices if necessary (e.g. `bluetoothctl` CLI).解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 应用 | elementary | switchboard_bluetooth_plug | * | From (including) 2.3.0 | Up to (excluding) 2.3.5 | ||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_32 | switchboard-plug-bluetooth | * | Up to (excluding) 2.3.5-1.fc32 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | switchboard-plug-bluetooth | * | Up to (excluding) 2.3.5-1.fc33 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | switchboard-plug-bluetooth | * | Up to (excluding) 2.3.5-1.fc34 | |||||
- 攻击路径 物理
- 攻击复杂度 复杂
- 权限要求 无需权限
- 影响范围 越权影响
- EXP成熟度 N/A
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-863 | 授权机制不正确 |
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