5.9
MEDIUM
CVE-2017-5544
FiberHome Fengine S5800 SSH Authentication Bypass Denial of Service
Description

An issue was discovered on FiberHome Fengine S5800 switches V210R240. An unauthorized attacker can access the device's SSH service, using a password cracking tool to establish SSH connections quickly. This will trigger an increase in the SSH login timeout (each of the login attempts will occupy a connection slot for a longer time). Once this occurs, legitimate login attempts via SSH/telnet will be refused, resulting in a denial of service; you must restart the device.

INFO

Published Date :

Jan. 23, 2017, 7:59 a.m.

Last Modified :

Sept. 9, 2021, 1:23 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.2
Affected Products

The following products are affected by CVE-2017-5544 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 Fiberhome fengine_s5800_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-2017-5544.

URL Resource
http://www.nfcwar.com URL Repurposed
http://www.securityfocus.com/bid/95708 Third Party Advisory VDB Entry

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).

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

The following list is the news that have been mention CVE-2017-5544 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-5544 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]

    Sep. 09, 2021

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://www.nfcwar.com Third Party Advisory http://www.nfcwar.com URL Repurposed
  • CPE Deprecation Remap by [email protected]

    Jul. 02, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:fiberhomegroup:fengine_28f-s:-:*:*:*:*:*:*:* OR *cpe:2.3:h:fiberhome:fengine_28f-s:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 02, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:fiberhomegroup:fengine_s5800-28t-s-pe:-:*:*:*:*:*:*:* OR *cpe:2.3:h:fiberhome:fengine_s5800-28t-s-pe:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 02, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:fiberhomegroup:fengine_52t-s:-:*:*:*:*:*:*:* OR *cpe:2.3:h:fiberhome:fengine_52t-s:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 02, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:fiberhomegroup:fengine_s5800_firmware:v210r240:*:*:*:*:*:*:* OR *cpe:2.3:o:fiberhome:fengine_s5800_firmware:v210r240:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 02, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:fiberhomegroup:fengine_s5800-28t-s:-:*:*:*:*:*:*:* OR *cpe:2.3:h:fiberhome:fengine_s5800-28t-s:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 02, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:fiberhomegroup:fengine_52f-s:-:*:*:*:*:*:*:* OR *cpe:2.3:h:fiberhome:fengine_52f-s:-:*:*:*:*:*:*:*
  • CWE Remap by [email protected]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-399 CWE-400
  • Modified Analysis by [email protected]

    Jan. 26, 2017

    Action Type Old Value New Value
    Changed Reference Type http://www.securityfocus.com/bid/95708 No Types Assigned http://www.securityfocus.com/bid/95708 Third Party Advisory, VDB Entry
  • CVE Modified by [email protected]

    Jan. 26, 2017

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/95708 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jan. 23, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:M/Au:N/C:N/I:N/A:C)
    Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://www.nfcwar.com No Types Assigned http://www.nfcwar.com Third Party Advisory
    Added CWE CWE-399
    Added CPE Configuration AND OR *cpe:2.3:o:fiberhomegroup:fengine_s5800_firmware:v210r240:*:*:*:*:*:*:* OR cpe:2.3:h:fiberhomegroup:fengine_28f-s:-:*:*:*:*:*:*:* cpe:2.3:h:fiberhomegroup:fengine_52f-s:-:*:*:*:*:*:*:* cpe:2.3:h:fiberhomegroup:fengine_52t-s:-:*:*:*:*:*:*:* cpe:2.3:h:fiberhomegroup:fengine_s5800-28t-s:-:*:*:*:*:*:*:* cpe:2.3:h:fiberhomegroup:fengine_s5800-28t-s-pe:-:*:*:*:*:*:*:*
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-2017-5544 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-2017-5544 weaknesses.

Exploit Prediction

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

0.11 }} 0.00%

score

0.43355

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability