PT-2021-5665 · Tp Link · Tp-Link Tl-Wr802N

Koh You Liang · Published 2021-12-23 · Updated 2022-01-04 · CVE-2021-4144

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions TP-Link wifi router TL-WR802N V4(JP) versions prior to 211202

Description The issue exists due to the lack of measures to neutralize special elements used in the operating system command. This can allow a remote attacker to execute arbitrary commands. The estimated number of potentially affected devices worldwide is not specified. There is no information about real-world incidents where this issue was exploited.

Recommendations For TP-Link wifi router TL-WR802N V4(JP) versions prior to 211202, update the firmware to version 211202 or later to resolve the issue. As a temporary workaround, consider restricting access to the router's operating system commands until a patch is available.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2022-00104

CVE-2021-4144

Affected Products

Tp-Link Tl-Wr802N

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2021-4144 · Security Note
• https://tp-link.com/jp/support/download/tl-wr802n/#Firmware · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-00104 · Security Note
• https://osv.dev/vulnerability/CVE-2021-4144 · Vendor Advisory
• https://jvn.jp/en/vu/JVNVU94883311 · Note
• https://t.me/cibsecurity/34558 · Telegram Post
• https://vuldb.com/ru/?id.188992 · Note
• https://t.me/cvenotify/24833 · Telegram Post