CVE-2019-12223
A system crash and reboot can be achieved by submitting a long username in excess of 117 characters.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.37% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- hanwha-security/srn-472s firmware · hanwha-security/srn-873s firmware · hanwha-security/srn-1673s firmware
- Source
- cve@mitre.org
References
- https://gist.github.com/dustinnoe/66f91573a0080c9fb2c21819d8805a82Exploit, Third Party Advisory
- 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/Product
- https://gist.github.com/dustinnoe/66f91573a0080c9fb2c21819d8805a82Exploit, Third Party Advisory
- 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/Product
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.