#VU27056 Stack-based buffer overflow in DSL-2640B - CVE-2020-9276
Published: April 21, 2020 / Updated: April 21, 2020
Vulnerability identifier: #VU27056
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2020-9276
CWE-ID: CWE-121
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
DSL-2640B
DSL-2640B
Software vendor:
D-Link
D-Link
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the "do_cgi()" function. A remote authenticated attacker on the local network can send a specially crafted HTTP request, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: Unauthenticated exploitation is possible by combining this vulnerability with CVE-2020-9277
This vulnerability affects devices with the following versions:
- Hardware version: B2
- Firmware version: ver.4.01
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.