PT-2018-10772 · Tp Link · Tp-Link Tl-Wr841N+1

Published 2018-06-04 · Updated 2018-07-31 · CVE-2018-11714

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions TP-Link TL-WR840N version 0.9.1 3.16 v0001.0 Build 170608 Rel.58696n TP-Link TL-WR841N version 0.9.1 4.16 v0001.0 Build 170622 Rel.64334n

Description The issue is caused by improper session handling on the "/cgi/" folder or a "/cgi" file. An attacker can exploit this by sending a header of "Referer: http://192.168.0.1/mainFrame.htm", which allows them to perform any action without requiring authentication.

Recommendations For TP-Link TL-WR840N version 0.9.1 3.16 v0001.0 Build 170608 Rel.58696n, restrict access to the /cgi/ folder to minimize the risk of exploitation. For TP-Link TL-WR841N version 0.9.1 4.16 v0001.0 Build 170622 Rel.64334n, avoid using the "/cgi/" folder until the issue is resolved.

Exploit

Fix

Session Fixation

Weakness Enumeration

CWE-384

Related Identifiers

CVE-2018-11714

Affected Products

Tp-Link Tl-Wr840N

Tp-Link Tl-Wr841N

References · 4

• 🔥 https://exploit-db.com/exploits/44781 · Exploit
• 🔥 http://blog.securelayer7.net/time-to-disable-tp-link-home-wifi-router · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-11714 · Security Note
• https://osv.dev/vulnerability/CVE-2018-11714 · Vendor Advisory