4.8 Medium
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:A/AC:L/Au:N/C:P/I:P/A:N
8.1 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
0.003 Low
EPSS
Percentile
69.4%
The DBPOWER U818A WIFI quadcopter drone provides FTP access over its own local access point, and allows full file permissions to the anonymous user.
The DBPOWER U8181A WIFI quadcopter drone is designed to record images and video from the air. The drone provides an undocumented FTP server, accessible on the local network via its local access point.
CWE-276**: Incorrect Default Permissions -**CVE-2017-3209
According to the reporter, the DBPower U818A WIFI quadcopter drone runs an FTP server that by default allows anonymous access without a password, and provides full filesystem read/write permissions to the anonymous user. A remote user within range of the open access point on the drone may utilize the anonymous user of the FTP server to read arbitrary files, such as images and video recorded by the device, or to replace system files such as /etc/shadow
to gain further access to the device.
Furthermore, the DBPOWER U818A WIFI quadcopter drone uses BusyBox 1.20.2, which was released in 2012, and may be vulnerable to other known BusyBox vulnerabilities.
It was later reported that similar models from other suppliers appear to be vulnerable to the same vulnerability. The reporter claims that the Udirc and Forcel U818A models may be related and in fact from the same manufacturer, but the CERT/CC has not currently verified this information.
A remote user within range of the open access point on the drone may utilize the anonymous user of the FTP server to read arbitrary files, such as images and video recorded by the device, or to replace system files and gain further access to the device.
The CERT/CC is currently unaware of a practical solution to this problem.
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Notified: February 24, 2017 Updated: April 07, 2017
Affected
We have not received a statement from the vendor.
We are not aware of further vendor information regarding this vulnerability.
Group | Score | Vector |
---|---|---|
Base | 7.8 | AV:A/AC:L/Au:N/C:C/I:C/A:N |
Temporal | 6.7 | E:POC/RL:U/RC:UR |
Environmental | 5.0 | CDP:ND/TD:M/CR:ND/IR:ND/AR:ND |
Thanks to Junia Valente (Cyber-Physical Systems Security Lab at UT Dallas) for reporting this vulnerability.
This document was written by Garret Wassermann.
CVE IDs: | CVE-2017-3209 |
---|---|
Date Public: | 2017-04-11 Date First Published: |
4.8 Medium
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:A/AC:L/Au:N/C:P/I:P/A:N
8.1 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
0.003 Low
EPSS
Percentile
69.4%