CVE-2020-8962 — CRITICAL (9.8)

Vulnerability Description

A stack-based buffer overflow was found on the D-Link DIR-842 REVC with firmware v3.13B09 HOTFIX due to the use of strcpy for LOGINPASSWORD when handling a POST request to the /MTFWU endpoint.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Dlink	Dir-842 Firmware	3.13b09
Dlink	Dir-842	c

Related Weaknesses (CWE)

CWE-787

References

https://ctrsec.io/index.php/2020/02/12/cve-2020-8962-d-link-dir-842-stack-based-ExploitThird Party Advisory
https://ctrsec.io/index.php/2020/02/12/cve-2020-8962-d-link-dir-842-stack-based-ExploitThird Party Advisory

FAQ

What is CVE-2020-8962?

CVE-2020-8962 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A stack-based buffer overflow was found on the D-Link DIR-842 REVC with firmware v3.13B09 HOTFIX due to the use of strcpy for LOGINPASSWORD when handling a POST request to the /MTFWU endpoint.

How severe is CVE-2020-8962?

CVE-2020-8962 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2020-8962?

Check the references section above for vendor advisories and patch information. Affected products include: Dlink Dir-842 Firmware, Dlink Dir-842.