What’s Vulnerable › Vulnerabilities

CVE-2019-12223

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-09-05 · updated 2026-06-17
• Weakness: CWE-119

Description

An issue was discovered in NVR WebViewer on Hanwah Techwin SRN-472s 1.07_190502 devices, and other SRN-x devices before 2019-05-03. A system crash and reboot can be achieved by submitting a long username in excess of 117 characters. The username triggers a buffer overflow in the main process controlling operation of the DVR system, rendering services unavailable during the reboot operation. A repeated attack affects availability as long as the attacker has network access to the device.

Affected products

• Hanwha-Security Srn-1673S Firmware: before 2019-05-03 — fixed in 2019-05-03
• Hanwha-Security Srn-472S Firmware: 1.07_190502
• Hanwha-Security Srn-873S Firmware: before 2019-05-03 — fixed in 2019-05-03

How to fix

Upgrade to a fixed version: Hanwha-Security Srn-1673S Firmware 2019-05-03; Hanwha-Security Srn-873S Firmware 2019-05-03. Check the vendor advisory for mitigations.

References

• https://gist.github.com/dustinnoe/66f91573a0080c9fb2c21819d8805a82
• https://medium.com/%40noe.dustin/samsung-webviewer-remote-dos-vulberability-cve-2019-12223-5f4afbc83fbd
• https://www.hanwha-security.com/en/products/video-recorder/nvr/ch4/SRN-472S/overview/
• https://gist.github.com/dustinnoe/66f91573a0080c9fb2c21819d8805a82
• https://medium.com/%40noe.dustin/samsung-webviewer-remote-dos-vulberability-cve-2019-12223-5f4afbc83fbd
• https://www.hanwha-security.com/en/products/video-recorder/nvr/ch4/SRN-472S/overview/

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