CVE-2019-12223 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5