PT-2020-4417 · Tp Link · Tp-Link Tl-Wr841N

Published 2020-04-02 · Updated 2020-04-06 · CVE-2020-8423

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: TP-Link TL-WR841N version 3.16.9

Description: A buffer overflow in the httpd daemon allows an authenticated remote attacker to execute arbitrary code via a GET request to the page for the configuration of the Wi-Fi network. The issue is related to a lack of size checking for input data, which can be exploited by a remote attacker to gain unauthorized access.

Recommendations: For TP-Link TL-WR841N version 3.16.9, consider restricting access to the httpd daemon or the Wi-Fi network configuration page as a temporary workaround until a patch is available. Avoid using the vulnerable firmware version until an update is released. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2020-04945

CVE-2020-8423

Affected Products

Tp-Link Tl-Wr841N

References · 8

• 🔥 https://ktln2.org/2020/03/29/exploiting-mips-router · Exploit
• https://safe-surf.ru/upload/VULN/VULN-20200615.5.pdf · Security Note
• https://bdu.fstec.ru/vul/2020-04945 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-8423 · Security Note
• https://tp-link.com/us/security · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-8423 · Vendor Advisory
• https://t.me/cvenotify/2369 · Telegram Post
• https://tp-link.com/us/press/security-advisory · Note