Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Informations
Name CVE-2017-8415 First vendor Publication 2019-07-02
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8415

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-798 Use of Hard-coded Credentials (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 1
Os 1

Sources (Detail)

http://packetstormsecurity.com/files/153226/Dlink-DCS-1130-Command-Injection-...
https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Dlink_DCS_1130_...
https://seclists.org/bugtraq/2019/Jun/8
Source Url

Alert History

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Date Informations
2024-11-28 13:09:41
  • Multiple Updates
2021-04-26 21:23:08
  • Multiple Updates
2020-05-23 01:04:27
  • Multiple Updates
2019-07-10 21:19:24
  • Multiple Updates
2019-07-03 17:19:06
  • Multiple Updates
2019-07-03 01:11:14
  • First insertion