CVE-2021-3166

An issue was discovered on ASUS DSL-N14U-B1 1.1.2.3_805 devices. An attacker can upload arbitrary file content as a firmware update when the filename Settings_DSL-N14U-B1.trx is used. Once this file is loaded, shutdown measures on a wide range of services are triggered as if it were a real update, resulting in a persistent outage of those services.

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

2.88% chance of exploitation in the next 30 days, 86th percentile

Published

2021-01-18

Updated

2024-08-03

Proof-of-concept exploits (3)

• kaisersource/kaisersource.github.io/blob/main/_posts/2021-01-17-dsl-n14u.md
• https://kaisersource.github.io/dsl-n14u
• kaisersource/CVE-2021-31660★ · 2022-11-18

References

• CVE Record
• NVD entry

Related

• CVE-2021-31659
• CVE-2021-31673
• CVE-2021-31658
• CVE-2021-31674
• CVE-2021-31655
• CVE-2021-31676