CVE Vulnerability

CVE-2020-36178

oal_ipt_addBridgeIsolationRules on TP-Link TL-WR840N 6_EU_0.9.1_4.16 devices allows OS command injection because a raw string entered from the web interface (an IP address field) is used directly for a call to the system library function (for iptables). NOTE: oal_ipt_addBridgeIsolationRules is not the only function that calls util_execSystem.

10 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://therealunicornsecurity.github.io/TPLink/ Exploit Third Party Advisory
https://github.com/therealunicornsecurity/therealunicornsecurity.github.io/blob/master/_posts/2020-10-11-TPLink.md Exploit Third Party Advisory
https://www.tp-link.com/fr/support/download/tl-wr840n/v6/#Firmware Vendor Advisory
Configurations

Configuration 1
Information

Published : 2021-01-06 09:15

Updated : 2021-01-12 02:38

NVD link : CVE-2020-36178

Mitre link : CVE-2020-36178

Products Affected

Tl-wr840n Firmware

Tp-link

CWE
CWE-78