9.1
CRITICAL
CVE-2024-33897
HMS Networks Cosy+ Certificate Signing Request Abuse Vulnerability
Description

A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing Request from Talk2m for another device, resulting in an availability issue. The issue was patched on the Talk2m production server on April 18, 2024.

INFO

Published Date :

Aug. 6, 2024, 2:16 p.m.

Last Modified :

Aug. 12, 2024, 4:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2024-33897 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 Hms-networks ewon_cosy\+_firmware
2 Hms-networks ewon_cosy\+
References to Advisories, Solutions, and Tools

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-2024-33897 vulnerability anywhere in the article.

  • seclists.org
Re: Improper Authentication (CWE-287) CVE-2024-33897

Full Disclosure mailing list archives From: Jeffrey Walton <noloader () gmail com> Date: Sun, 18 Aug 2024 03:10:41 -0400 On Sun, Aug 18, 2024 at 2:39 AM Moritz Abrell via Fulldisclosure <fulldisclosur ... Read more

Published Date: Aug 22, 2024 (4 weeks ago)
  • seclists.org
Improper Authentication (CWE-287) CVE-2024-33897

Full Disclosure mailing list archives From: Moritz Abrell via Fulldisclosure <fulldisclosure () seclists org> Date: Sun, 11 Aug 2024 19:49:16 +0200 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advi ... Read more

Published Date: Aug 18, 2024 (1 month ago)
  • Cyber Security News
Researchers Hacked Industrial Remote Access Gateway Tool to Gain Root Access

Security researchers have uncovered severe vulnerabilities in the Ewon Cosy+, a widely used industrial remote access gateway tool, allowing them to gain root access and compromise the device’s securit ... Read more

Published Date: Aug 12, 2024 (1 month, 1 week ago)

The following table lists the changes that have been made to the CVE-2024-33897 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]

    Aug. 12, 2024

    Action Type Old Value New Value
    Added Reference MITRE https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/ [No types assigned]
  • Initial Analysis by [email protected]

    Aug. 12, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
    Changed Reference Type https://hmsnetworks.blob.core.windows.net/nlw/docs/default-source/products/cybersecurity/security-advisory/hms-security-advisory-2024-07-29-001--ewon-several-cosy--vulnerabilities.pdf No Types Assigned https://hmsnetworks.blob.core.windows.net/nlw/docs/default-source/products/cybersecurity/security-advisory/hms-security-advisory-2024-07-29-001--ewon-several-cosy--vulnerabilities.pdf Vendor Advisory
    Changed Reference Type https://www.ewon.biz/products/cosy/ewon-cosy-wifi No Types Assigned https://www.ewon.biz/products/cosy/ewon-cosy-wifi Product
    Changed Reference Type https://www.hms-networks.com/cyber-security No Types Assigned https://www.hms-networks.com/cyber-security Vendor Advisory
    Added CWE NIST CWE-425
    Added CPE Configuration AND OR *cpe:2.3:o:hms-networks:ewon_cosy\+_firmware:*:*:*:*:*:*:*:* versions from (including) 21.0s0 up to (excluding) 21.2s10 *cpe:2.3:o:hms-networks:ewon_cosy\+_firmware:*:*:*:*:*:*:*:* versions from (including) 22.0s0 up to (excluding) 22.1s3 OR cpe:2.3:h:hms-networks:ewon_cosy\+:-:*:*:*:*:*:*:*
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Aug. 07, 2024

    Action Type Old Value New Value
    Added CWE CISA-ADP CWE-425
    Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
  • CVE Received by [email protected]

    Aug. 06, 2024

    Action Type Old Value New Value
    Added Description A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing Request from Talk2m for another device, resulting in an availability issue. The issue was patched on the Talk2m production server on April 18, 2024.
    Added Reference MITRE https://www.ewon.biz/products/cosy/ewon-cosy-wifi [No types assigned]
    Added Reference MITRE https://www.hms-networks.com/cyber-security [No types assigned]
    Added Reference MITRE https://hmsnetworks.blob.core.windows.net/nlw/docs/default-source/products/cybersecurity/security-advisory/hms-security-advisory-2024-07-29-001--ewon-several-cosy--vulnerabilities.pdf [No types assigned]
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-2024-33897 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

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