CVE-2017-8415
D-Link Telnet Daemon Password Hardcoded Hash Vulnerability
Description
An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. The device has a custom telnet daemon as a part of the busybox and retrieves the password from the shadow file using the function getspnam at address 0x00053894. Then performs a crypt operation on the password retrieved from the user at address 0x000538E0 and performs a strcmp at address 0x00053908 to check if the password is correct or incorrect. However, the /etc/shadow file is a part of CRAM-FS filesystem which means that the user cannot change the password and hence a hardcoded hash in /etc/shadow is used to match the credentials provided by the user. This is a salted hash of the string "admin" and hence it acts as a password to the device which cannot be changed as the whole filesystem is read only.
INFO
Published Date :
July 2, 2019, 9:15 p.m.
Last Modified :
April 26, 2021, 4:09 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2017-8415 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-2017-8415
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.
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-2017-8415.
| 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
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-8415 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-8415 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. 26, 2021
Action Type Old Value New Value Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:N/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:N/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3 AV:N/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-798 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:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-8415 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-8415
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.41 }} -0.01%
score
0.74152
percentile