PT-2021-5269 · D Link · D-Link Dir-823G

Published 2021-11-04 · Updated 2021-11-06 · CVE-2020-25366

Positive Technologies (AI Summary)

CVSS v3.1

9.4

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions D-Link DIR-823G REVA1 version 1.02B05

Description The issue is related to the /cgi-bin/upload firmware.cgi component, which lacks authorization. This allows remote attackers to cause a denial of service (DoS) via unspecified vectors.

Recommendations For D-Link DIR-823G REVA1 version 1.02B05, as a temporary workaround, consider disabling access to the /cgi-bin/upload firmware.cgi component until a patch is available. Restrict access to this component to minimize the risk of exploitation.

Exploit

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

BDU:2021-06095

CVE-2020-25366

Affected Products

D-Link Dir-823G

References · 8

• 🔥 https://github.com/sek1th/iot/blob/master/dir823g_upfw_dos.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-25366 · Security Note
• https://dlink.com/en/security-bulletin · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-25366 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-06095 · Security Note
• http://d-link.com · Vendor Advisory
• https://t.me/cvenotify/22958 · Telegram Post
• https://t.me/cibsecurity/31804 · Telegram Post