CVE Vulnerability

CVE-2021-34203

D-Link DIR-2640-US 1.01B04 is vulnerable to Incorrect Access Control. Router ac2600 (dir-2640-us), when setting PPPoE, will start quagga process in the way of whole network monitoring, and this function uses the original default password and port. An attacker can easily use telnet to log in, modify routing information, monitor the traffic of all devices under the router, hijack DNS and phishing attacks. In addition, this interface is likely to be questioned by customers as a backdoor, because the interface should not be exposed.

4.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 6.5 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

Scope

8.1 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.dlink.com/en/security-bulletin/ Vendor Advisory
http://d-link.com Vendor Advisory
http://dir-2640-us.com Broken Link
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34203 Exploit Third Party Advisory
Configurations

Configuration 1
Information

Published : 2021-06-16 08:15

Updated : 2022-07-12 05:42

NVD link : CVE-2021-34203

Mitre link : CVE-2021-34203

Products Affected
No products.
CWE
CWE-1188

Insecure Default Initialization of Resource