CVE-2020-9276 Information

Description

An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. The function do_cgi() which processes cgi requests supplied to the device’s web servers is vulnerable to a remotely exploitable stack-based buffer overflow. Unauthenticated exploitation is possible by combining this vulnerability with CVE-2020-9277.

CVSS Vector

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

Reference

https://raelize.com/advisories/CVE-2020-9276_D-Link-DSL-2640B_do_cgi-buffer-overflow_v1.0.txt https://raelize.com/posts/d-link-dsl-2640b-security-advisories/ https://www.dlink.com/en/security-bulletin

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8