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CVE-2021-21367— DanielForé switchboard-plug-bluetooth 安全漏洞

一分钟漏洞结论

影响对象
elementary switchboard-plug-bluetooth
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

DanielForé switchboard-plug-bluetooth是 （DanielForé）开源的一个应用软件。一个配电盘蓝牙插头。 Switchboard Bluetooth 存在安全漏洞，攻击者很可能能够未经授权从此类服务中提取数据。

CVSS 6.1 · Medium EPSS 0.51% · P42
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一、 漏洞 CVE-2021-21367 基础信息

漏洞信息
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Vulnerability Title
Incorrect Authorization in switchboard-plug-bluetooth
来源: CVE Program / CVE List V5
Vulnerability Description
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).
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L
来源: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
来源: CVE Program / CVE List V5
Vulnerability Title
DanielForé switchboard-plug-bluetooth 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
DanielForé switchboard-plug-bluetooth是 （DanielForé）开源的一个应用软件。一个配电盘蓝牙插头。 Switchboard Bluetooth 存在安全漏洞，攻击者很可能能够未经授权从此类服务中提取数据。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
elementary switchboard-plug-bluetooth >= 2.3.0, < 2.3.5 -

二、漏洞 CVE-2021-21367 的公开POC

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三、漏洞 CVE-2021-21367 的情报信息

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CVE-2021-21367 补丁与修复 (1)

CVE-2021-21367 厂商安全公告 (1)

CVE-2021-21367 邮件列表归档 (3)

CVE-2021-21367 其他参考 (1)

IV. Related Vulnerabilities

Same weakness: CWE-863

V. Comments for CVE-2021-21367

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