CVE-2024-33893

Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to XSS when displaying the logs due to improper input sanitization. This is fixed in version 21.2s10 and 22.1s3.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
mitreCNA
---
---
CISA-ADPADP
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 78%
VendorProductVersion
hms-networksewon_cosy\+_firmware
21.0 ≤
𝑥
≤ 21.2s10
hms-networksewon_cosy\+_firmware
22.0 ≤
𝑥
≤ 22.1s3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/
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
https://www.ewon.biz/products/cosy/ewon-cosy-wifi
https://www.hms-networks.com/cyber-security
http://seclists.org/fulldisclosure/2024/Aug/19
http://seclists.org/fulldisclosure/2024/Aug/22