DBPOWER U818A 1.20.2 FTP Access access control

Summaryinfo

A vulnerability identified as critical has been detected in DBPOWER U818A 1.20.2. This impacts an unknown function of the component FTP Access. This manipulation causes access control. This vulnerability is handled as CVE-2017-3209. The attack can be initiated remotely. There is not any exploit available. This vulnerability is considered historic because of its background and reception.

Detailsinfo

A vulnerability classified as critical was found in DBPOWER U818A 1.20.2. Affected by this vulnerability is some unknown functionality of the component FTP Access. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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 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.

The bug was discovered 04/11/2017. The weakness was released 07/24/2018 by Junia Valente as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. This vulnerability is known as CVE-2017-3209 since 12/04/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/28/2024). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. Due to its background and reception, this vulnerability has a historic impact.

The vulnerability was handled as a non-public zero-day exploit for at least 469 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 97564†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• DBPOWER

Name

• U818A

Version

• 1.20.2

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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