PT-2022-3861 · Asus · Asus Dsl-N14U-B1

Kaisersource · Published 2022-05-11 · Updated 2022-07-12 · CVE-2021-3254

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Asus DSL-N14U-B1 version 1.1.2.3 805

Description The issue is related to an uncontrolled resource consumption in the Asus DSL-N14U Wi-Fi router's firmware, allowing remote attackers to cause a Denial of Service (DoS) via a TCP SYN scan using nmap.

Recommendations For Asus DSL-N14U-B1 version 1.1.2.3 805, as a temporary workaround, consider restricting access to the device to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

BDU:2022-04664

CVE-2021-3254

Affected Products

Asus Dsl-N14U-B1

References · 7

• 🔥 https://kaisersource.github.io/dsl-n14u-syn · Exploit
• https://bdu.fstec.ru/vul/2022-04664 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-3254 · Security Note
• https://osv.dev/vulnerability/CVE-2021-3254 · Vendor Advisory
• https://github.com/kaisersource/kaisersource.github.io/blob/main/_posts/2021-01-22-dsl-n14u.md · Note
• https://t.me/cvenotify/30402 · Telegram Post
• https://t.me/cibsecurity/42343 · Telegram Post