CVE-2024-33897

2024-08-0600:00:00

mitre

github.com

compromised device

certificate signing request

talk2m

availability issue

patched

april 18 2024

AI Score

6.8

Confidence

Low

EPSS

0.001

Percentile

24.8%

SSVC

Exploitation

none

Automatable

yes

Technical Impact

partial

JSON

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.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:o:hms-networks:ewon_cosy_firmware:*:*:*:*:*:*:*:*"
    ],
    "vendor": "hms-networks",
    "product": "ewon_cosy_firmware",
    "versions": [
      {
        "status": "affected",
        "version": "21.0",
        "lessThan": "21.2s10",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "22.0",
        "lessThan": "22.1s3",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  }
]

References

blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/

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

www.ewon.biz/products/cosy/ewon-cosy-wifi

www.hms-networks.com/cyber-security