CVE Vulnerability

CVE-2018-5721

Stack-based buffer overflow in the ej_update_variables function in router/httpd/web.c on ASUS routers (when using software from https://github.com/RMerl/asuswrt-merlin) allows web authenticated attackers to execute code via a request that updates a setting. In ej_update_variables, the length of the variable action_script is not checked, as long as it includes a "_wan_if" substring.

6.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
http://www.w0lfzhang.com/2018/01/17/ASUS-router-stack-overflow-in-http-server/ Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:asuswrt-merlin:asuswrt-merlin:*:*:*:*:*:*:*:*
Information

Published : 2018-01-17 06:29

Updated : 2020-08-24 05:37

NVD link : CVE-2018-5721

Mitre link : CVE-2018-5721

Products Affected
No products.
CWE
CWE-787