8.8
HIGH
CVE-2017-8413
"D-Link DCS-1100/DCS-1130 Unauthenticated Remote Command Execution via Custom UDP Protocol"
Description

An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. The device runs a custom daemon on UDP port 5978 which is called "dldps2121" and listens for broadcast packets sent on 255.255.255.255. This daemon handles custom D-Link UDP based protocol that allows D-Link mobile applications and desktop applications to discover D-Link devices on the local network. The binary processes the received UDP packets sent from any device in "main" function. One path in the function traverses towards a block of code that handles commands to be executed on the device. The custom protocol created by D-Link follows the following pattern: Packetlen, Type of packet; M=MAC address of device or broadcast; D=Device Type;C=base64 encoded command string;test=1111. If a packet is received with the packet type being "S" or 0x53 then the string passed in the "C" parameter is base64 decoded and then executed by passing into a System API. We can see at address 0x00009B44 that the string received in packet type subtracts 0x31 or "1" from the packet type and is compared against 0x22 or "double quotes". If that is the case, then the packet is sent towards the block of code that executes a command. Then the value stored in "C" parameter is extracted at address 0x0000A1B0. Finally, the string received is base 64 decoded and passed on to the system API at address 0x0000A2A8 as shown below. The same form of communication can be initiated by any process including an attacker process on the mobile phone or the desktop and this allows a third-party application on the device to execute commands on the device without any authentication by sending just 1 UDP packet with custom base64 encoding.

INFO

Published Date :

July 2, 2019, 9:15 p.m.

Last Modified :

April 23, 2021, 4:47 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2017-8413 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2017-8413 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Dlink dcs-1130_firmware
2 Dlink dcs-1100_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2017-8413.

URL Resource
http://packetstormsecurity.com/files/153226/Dlink-DCS-1130-Command-Injection-CSRF-Stack-Overflow.html Third Party Advisory VDB Entry
https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Dlink_DCS_1130_security.pdf Not Applicable Third Party Advisory
https://seclists.org/bugtraq/2019/Jun/8 Mailing List Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

This repo contains alls the vulnerabilities identified as a part of security research against IoT devices

Updated: 1 year, 9 months ago
23 stars 4 fork 4 watcher
Born at : June 6, 2019, 6:56 p.m. This repo has been linked 59 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2017-8413 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-8413 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Apr. 23, 2021

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Jul. 10, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:A/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://packetstormsecurity.com/files/153226/Dlink-DCS-1130-Command-Injection-CSRF-Stack-Overflow.html No Types Assigned http://packetstormsecurity.com/files/153226/Dlink-DCS-1130-Command-Injection-CSRF-Stack-Overflow.html Third Party Advisory, VDB Entry
    Changed Reference Type https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Dlink_DCS_1130_security.pdf No Types Assigned https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Dlink_DCS_1130_security.pdf Not Applicable, Third Party Advisory
    Changed Reference Type https://seclists.org/bugtraq/2019/Jun/8 No Types Assigned https://seclists.org/bugtraq/2019/Jun/8 Mailing List, Third Party Advisory
    Added CWE CWE-77
    Added CPE Configuration AND OR *cpe:2.3:o:dlink:dcs-1130_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:dlink:dcs-1130:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:dlink:dcs-1100_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:dlink:dcs-1100:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2017-8413 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.13 }} 0.02%

score

0.49981

percentile

CVSS31 - Vulnerability Scoring System
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Attack Complexity
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Scope
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